Vulnerability-Lookup

BDU:2026-03493 (CVE-2022-49330)

Vulnerability from fstec – Published: 2026-03-24 – Updated: 2026-03-24 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции tcp_mtup_probe_success() модуля net/ipv4/tcp_input.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции tcp_mtup_probe_success() модуля net/ipv4/tcp_input.c ядра операционной системы Linux связана с ошибками деления на ноль. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании

Severity

4.6 (Medium) CVSS 2.0


                      
                        AV:L/AC:L/Au:S/C:N/I:N/A:C

5.5 (Medium) CVSS 3.1


                      
                        CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-369 - Деление на ноль

Aliases

CVE-2022-49330

References

22 references

URL
https://git.kernel.org/stable/c/42726877453afdbe1508a8a96884ea907741d9a7
https://git.kernel.org/stable/c/f2845e1504a3bc4f3381394f057e8b63cb5f3f7a
https://git.kernel.org/stable/c/29e13f6b38f0816af2012e0725507754e8f4569c
https://git.kernel.org/stable/c/9ba2b4ac35935f05ac98cff722f36ba07d62270e
https://git.kernel.org/stable/c/602b338e3c3cd7f935f3f5011882961d074e5ac1
https://git.kernel.org/stable/c/aa7f333efd1138a68517a6a6a69ae540dd59d800
https://git.kernel.org/stable/c/90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc
https://git.kernel.org/stable/c/38ca71a24cd4845021eed35fd2594d89dba9a5a8
https://www.cve.org/CVERecord?id=CVE-2022-49330
https://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49330-199b@gregkh/
https://git.kernel.org/linus/11825765291a93d8e7f44230da67b9f607c777bf
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.318
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.283
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.247
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.122
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.47
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.15
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
https://security-tracker.debian.org/tracker/CVE-2022-49330
https://access.redhat.com/security/cve/CVE-2022-49330
https://ubuntu.com/security/CVE-2022-49330

Impacted products

4 products from 4 vendors

Vendors

Canonical Ltd., Red Hat, Inc., Сообщество свободного программного обеспечения

Products

Ubuntu, Red Hat Enterprise Linux, Debian GNU/Linux, Linux

Versions

14.04 LTS (Ubuntu), 16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 8 (Red Hat Enterprise Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), от 5.18 до 5.18.3 включительно (Linux), от 4.10 до 4.14.282 включительно (Linux), от 4.15 до 4.19.246 включительно (Linux), от 4.20 до 5.4.197 включительно (Linux), от 5.5 до 5.10.121 включительно (Linux), от 5.11 до 5.15.46 включительно (Linux), от 5.16 до 5.17.14 включительно (Linux), от 2.6.17 до 4.9.317 включительно (Linux)

Product types

Operating system

Platforms

Canonical Ltd. Ubuntu 14.04 LTS, Canonical Ltd. Ubuntu 16.04 LTS, Canonical Ltd. Ubuntu 18.04 LTS, Red Hat, Inc. Red Hat Enterprise Linux 8, Canonical Ltd. Ubuntu 20.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Canonical Ltd. Ubuntu 22.04 LTS, Inc. Red Hat Enterprise Linux 9, Сообщество свободного программного обеспечения Linux от 5.18 до 5.18.3 включительно, Сообщество свободного программного обеспечения Linux от 4.10 до 4.14.282 включительно, Сообщество свободного программного обеспечения Linux от 4.15 до 4.19.246 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.197 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.121 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.46 включительно, Сообщество свободного программного обеспечения Linux от 5.16 до 5.17.14 включительно, Сообщество свободного программного обеспечения Linux от 2.6.17 до 4.9.317 включительно

Mitigations

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:S/C:N/I:N/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Canonical Ltd., Red Hat, Inc., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "14.04 LTS (Ubuntu), 16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 8 (Red Hat Enterprise Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), \u043e\u0442 5.18 \u0434\u043e 5.18.3 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.282 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.246 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.197 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.121 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.46 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16 \u0434\u043e 5.17.14 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 2.6.17 \u0434\u043e 4.9.317 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\n\u0414\u043b\u044f Linux:\n\nhttps://git.kernel.org/stable/c/42726877453afdbe1508a8a96884ea907741d9a7\nhttps://git.kernel.org/stable/c/f2845e1504a3bc4f3381394f057e8b63cb5f3f7a\nhttps://git.kernel.org/stable/c/29e13f6b38f0816af2012e0725507754e8f4569c\nhttps://git.kernel.org/stable/c/9ba2b4ac35935f05ac98cff722f36ba07d62270e\nhttps://git.kernel.org/stable/c/602b338e3c3cd7f935f3f5011882961d074e5ac1\nhttps://git.kernel.org/stable/c/aa7f333efd1138a68517a6a6a69ae540dd59d800\nhttps://git.kernel.org/stable/c/90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc\nhttps://git.kernel.org/stable/c/38ca71a24cd4845021eed35fd2594d89dba9a5a8\n\nhttps://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49330-199b@gregkh/\nhttps://git.kernel.org/linus/11825765291a93d8e7f44230da67b9f607c777bf\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.318\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.283\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.247\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.122\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.47\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.15\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4\n\n\n\n\u0414\u043b\u044f Debian GNU/Linux:\n\nhttps://security-tracker.debian.org/tracker/CVE-2022-49330\n\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\n\nhttps://access.redhat.com/security/cve/CVE-2022-49330\n\n\n\n\u0414\u043b\u044f Ubuntu:\n\nhttps://ubuntu.com/security/CVE-2022-49330",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "27.05.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "24.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "24.03.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-03493",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2022-49330",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Ubuntu, Red Hat Enterprise Linux, Debian GNU/Linux, Linux",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Canonical Ltd. Ubuntu 14.04 LTS , Canonical Ltd. Ubuntu 16.04 LTS , Canonical Ltd. Ubuntu 18.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 8 , Canonical Ltd. Ubuntu 20.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , Canonical Ltd. Ubuntu 22.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 9 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.18 \u0434\u043e 5.18.3 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.10 \u0434\u043e 4.14.282 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.15 \u0434\u043e 4.19.246 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.20 \u0434\u043e 5.4.197 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.5 \u0434\u043e 5.10.121 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.11 \u0434\u043e 5.15.46 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.16 \u0434\u043e 5.17.14 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 2.6.17 \u0434\u043e 4.9.317 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 tcp_mtup_probe_success() \u043c\u043e\u0434\u0443\u043b\u044f net/ipv4/tcp_input.c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0414\u0435\u043b\u0435\u043d\u0438\u0435 \u043d\u0430 \u043d\u043e\u043b\u044c (CWE-369)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 tcp_mtup_probe_success() \u043c\u043e\u0434\u0443\u043b\u044f net/ipv4/tcp_input.c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043d\u0430 \u043d\u043e\u043b\u044c. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://git.kernel.org/stable/c/42726877453afdbe1508a8a96884ea907741d9a7\nhttps://git.kernel.org/stable/c/f2845e1504a3bc4f3381394f057e8b63cb5f3f7a\nhttps://git.kernel.org/stable/c/29e13f6b38f0816af2012e0725507754e8f4569c\nhttps://git.kernel.org/stable/c/9ba2b4ac35935f05ac98cff722f36ba07d62270e\nhttps://git.kernel.org/stable/c/602b338e3c3cd7f935f3f5011882961d074e5ac1\nhttps://git.kernel.org/stable/c/aa7f333efd1138a68517a6a6a69ae540dd59d800\nhttps://git.kernel.org/stable/c/90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc\nhttps://git.kernel.org/stable/c/38ca71a24cd4845021eed35fd2594d89dba9a5a8\n\nhttps://www.cve.org/CVERecord?id=CVE-2022-49330\n\nhttps://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49330-199b@gregkh/\nhttps://git.kernel.org/linus/11825765291a93d8e7f44230da67b9f607c777bf\n\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.318\n\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.283\n\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.247\n\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198\n\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.122\n\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.47\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.15\n\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4\n\nhttps://security-tracker.debian.org/tracker/CVE-2022-49330\n\nhttps://access.redhat.com/security/cve/CVE-2022-49330\n\nhttps://ubuntu.com/security/CVE-2022-49330",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-369",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,5)"
}

CVE-2022-49330 (GCVE-0-2022-49330)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-08-05 08:54

Title

tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd

Summary

In the Linux kernel, the following vulnerability has been resolved: tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd syzbot got a new report [1] finally pointing to a very old bug, added in initial support for MTU probing. tcp_mtu_probe() has checks about starting an MTU probe if tcp_snd_cwnd(tp) >= 11. But nothing prevents tcp_snd_cwnd(tp) to be reduced later and before the MTU probe succeeds. This bug would lead to potential zero-divides. Debugging added in commit 40570375356c ("tcp: add accessors to read/set tp->snd_cwnd") has paid off :) While we are at it, address potential overflows in this code. [1] WARNING: CPU: 1 PID: 14132 at include/net/tcp.h:1219 tcp_mtup_probe_success+0x366/0x570 net/ipv4/tcp_input.c:2712 Modules linked in: CPU: 1 PID: 14132 Comm: syz-executor.2 Not tainted 5.18.0-syzkaller-07857-gbabf0bb978e3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcp_snd_cwnd_set include/net/tcp.h:1219 [inline] RIP: 0010:tcp_mtup_probe_success+0x366/0x570 net/ipv4/tcp_input.c:2712 Code: 74 08 48 89 ef e8 da 80 17 f9 48 8b 45 00 65 48 ff 80 80 03 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 aa b0 c5 f8 <0f> 0b e9 16 fe ff ff 48 8b 4c 24 08 80 e1 07 38 c1 0f 8c c7 fc ff RSP: 0018:ffffc900079e70f8 EFLAGS: 00010287 RAX: ffffffff88c0f7f6 RBX: ffff8880756e7a80 RCX: 0000000000040000 RDX: ffffc9000c6c4000 RSI: 0000000000031f9e RDI: 0000000000031f9f RBP: 0000000000000000 R08: ffffffff88c0f606 R09: ffffc900079e7520 R10: ffffed101011226d R11: 1ffff1101011226c R12: 1ffff1100eadcf50 R13: ffff8880756e72c0 R14: 1ffff1100eadcf89 R15: dffffc0000000000 FS: 00007f643236e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1ab3f1e2a0 CR3: 0000000064fe7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> tcp_clean_rtx_queue+0x223a/0x2da0 net/ipv4/tcp_input.c:3356 tcp_ack+0x1962/0x3c90 net/ipv4/tcp_input.c:3861 tcp_rcv_established+0x7c8/0x1ac0 net/ipv4/tcp_input.c:5973 tcp_v6_do_rcv+0x57b/0x1210 net/ipv6/tcp_ipv6.c:1476 sk_backlog_rcv include/net/sock.h:1061 [inline] __release_sock+0x1d8/0x4c0 net/core/sock.c:2849 release_sock+0x5d/0x1c0 net/core/sock.c:3404 sk_stream_wait_memory+0x700/0xdc0 net/core/stream.c:145 tcp_sendmsg_locked+0x111d/0x3fc0 net/ipv4/tcp.c:1410 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1448 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x439/0x5c0 net/socket.c:2119 __do_sys_sendto net/socket.c:2131 [inline] __se_sys_sendto net/socket.c:2127 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2127 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f6431289109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f643236e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f643139c100 RCX: 00007f6431289109 RDX: 00000000d0d0c2ac RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007f64312e308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff372533af R14: 00007f643236e300 R15: 0000000000022000

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

9 references

URL	Tags
https://git.kernel.org/stable/c/29e13f6b38f0816af…
https://git.kernel.org/stable/c/42726877453afdbe1…
https://git.kernel.org/stable/c/f2845e1504a3bc4f3…
https://git.kernel.org/stable/c/602b338e3c3cd7f93…
https://git.kernel.org/stable/c/9ba2b4ac35935f05a…
https://git.kernel.org/stable/c/90385f2b65d0cd2b3…
https://git.kernel.org/stable/c/aa7f333efd1138a68…
https://git.kernel.org/stable/c/38ca71a24cd484502…
https://git.kernel.org/stable/c/11825765291a93d8e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 29e13f6b38f0816af2012e0725507754e8f4569c (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 42726877453afdbe1508a8a96884ea907741d9a7 (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < f2845e1504a3bc4f3381394f057e8b63cb5f3f7a (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 602b338e3c3cd7f935f3f5011882961d074e5ac1 (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 9ba2b4ac35935f05ac98cff722f36ba07d62270e (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < aa7f333efd1138a68517a6a6a69ae540dd59d800 (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 38ca71a24cd4845021eed35fd2594d89dba9a5a8 (git) Affected: 5d424d5a674f782d0659a3b66d951f412901faee , < 11825765291a93d8e7f44230da67b9f607c777bf (git)
Linux	Linux	Affected: 2.6.17 Unaffected: 0 , < 2.6.17 (semver) Unaffected: 4.9.318 , ≤ 4.9.* (semver) Unaffected: 4.14.283 , ≤ 4.14.* (semver) Unaffected: 4.19.247 , ≤ 4.19.* (semver) Unaffected: 5.4.198 , ≤ 5.4.* (semver) Unaffected: 5.10.122 , ≤ 5.10.* (semver) Unaffected: 5.15.47 , ≤ 5.15.* (semver) Unaffected: 5.17.15 , ≤ 5.17.* (semver) Unaffected: 5.18.4 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/tcp_input.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "29e13f6b38f0816af2012e0725507754e8f4569c",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "42726877453afdbe1508a8a96884ea907741d9a7",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "f2845e1504a3bc4f3381394f057e8b63cb5f3f7a",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "602b338e3c3cd7f935f3f5011882961d074e5ac1",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "9ba2b4ac35935f05ac98cff722f36ba07d62270e",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "aa7f333efd1138a68517a6a6a69ae540dd59d800",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "38ca71a24cd4845021eed35fd2594d89dba9a5a8",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            },
            {
              "lessThan": "11825765291a93d8e7f44230da67b9f607c777bf",
              "status": "affected",
              "version": "5d424d5a674f782d0659a3b66d951f412901faee",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/tcp_input.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.17"
            },
            {
              "lessThan": "2.6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.318",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.283",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.318",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.283",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.247",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.198",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.122",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.47",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.15",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.4",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "2.6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix tcp_mtup_probe_success vs wrong snd_cwnd\n\nsyzbot got a new report [1] finally pointing to a very old bug,\nadded in initial support for MTU probing.\n\ntcp_mtu_probe() has checks about starting an MTU probe if\ntcp_snd_cwnd(tp) \u003e= 11.\n\nBut nothing prevents tcp_snd_cwnd(tp) to be reduced later\nand before the MTU probe succeeds.\n\nThis bug would lead to potential zero-divides.\n\nDebugging added in commit 40570375356c (\"tcp: add accessors\nto read/set tp-\u003esnd_cwnd\") has paid off :)\n\nWhile we are at it, address potential overflows in this code.\n\n[1]\nWARNING: CPU: 1 PID: 14132 at include/net/tcp.h:1219 tcp_mtup_probe_success+0x366/0x570 net/ipv4/tcp_input.c:2712\nModules linked in:\nCPU: 1 PID: 14132 Comm: syz-executor.2 Not tainted 5.18.0-syzkaller-07857-gbabf0bb978e3 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:tcp_snd_cwnd_set include/net/tcp.h:1219 [inline]\nRIP: 0010:tcp_mtup_probe_success+0x366/0x570 net/ipv4/tcp_input.c:2712\nCode: 74 08 48 89 ef e8 da 80 17 f9 48 8b 45 00 65 48 ff 80 80 03 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 aa b0 c5 f8 \u003c0f\u003e 0b e9 16 fe ff ff 48 8b 4c 24 08 80 e1 07 38 c1 0f 8c c7 fc ff\nRSP: 0018:ffffc900079e70f8 EFLAGS: 00010287\nRAX: ffffffff88c0f7f6 RBX: ffff8880756e7a80 RCX: 0000000000040000\nRDX: ffffc9000c6c4000 RSI: 0000000000031f9e RDI: 0000000000031f9f\nRBP: 0000000000000000 R08: ffffffff88c0f606 R09: ffffc900079e7520\nR10: ffffed101011226d R11: 1ffff1101011226c R12: 1ffff1100eadcf50\nR13: ffff8880756e72c0 R14: 1ffff1100eadcf89 R15: dffffc0000000000\nFS:  00007f643236e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f1ab3f1e2a0 CR3: 0000000064fe7000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n tcp_clean_rtx_queue+0x223a/0x2da0 net/ipv4/tcp_input.c:3356\n tcp_ack+0x1962/0x3c90 net/ipv4/tcp_input.c:3861\n tcp_rcv_established+0x7c8/0x1ac0 net/ipv4/tcp_input.c:5973\n tcp_v6_do_rcv+0x57b/0x1210 net/ipv6/tcp_ipv6.c:1476\n sk_backlog_rcv include/net/sock.h:1061 [inline]\n __release_sock+0x1d8/0x4c0 net/core/sock.c:2849\n release_sock+0x5d/0x1c0 net/core/sock.c:3404\n sk_stream_wait_memory+0x700/0xdc0 net/core/stream.c:145\n tcp_sendmsg_locked+0x111d/0x3fc0 net/ipv4/tcp.c:1410\n tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1448\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n __sys_sendto+0x439/0x5c0 net/socket.c:2119\n __do_sys_sendto net/socket.c:2131 [inline]\n __se_sys_sendto net/socket.c:2127 [inline]\n __x64_sys_sendto+0xda/0xf0 net/socket.c:2127\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\nRIP: 0033:0x7f6431289109\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f643236e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\nRAX: ffffffffffffffda RBX: 00007f643139c100 RCX: 00007f6431289109\nRDX: 00000000d0d0c2ac RSI: 0000000020000080 RDI: 000000000000000a\nRBP: 00007f64312e308d R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007fff372533af R14: 00007f643236e300 R15: 0000000000022000"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - tcp_mtup_probe_success runs from tcp_clean_rtx_queue \u2192 tcp_ack \u2192 tcp_rcv_established while processing inbound ACKs on an established socket, so a remote TCP peer reaches it via ordinary network packets with no local login.\nAC:L - A remote peer that drives a data-heavy connection can induce loss to shrink cwnd after a probe starts and then ACK the probe; MTU probing is enabled in realistic deployments (sysctl=1/2 or after blackhole detection), and the attacker controls the peer-side conditions needed to trigger the bad update.\nPR:N - Triggering needs only the ability to exchange TCP segments on an existing connection; no authentication or local privileges are required of the remote attacker.\nUI:N - Exploitation does not require any victim user action beyond an already-running TCP endpoint sending data and processing peer ACKs.\nS:U - Impact stays within the host kernel TCP/congestion-control authority; there is no VM escape, sandbox escape, or other cross-boundary scope change.\nC:N - The bug only miscomputes snd_cwnd (possibly to zero); it does not corrupt memory or disclose kernel or user data.\nI:N - There is no write primitive, type confusion, or control-flow hijack\u2014only an incorrect congestion window value on the socket.\nA:H - Setting snd_cwnd to 0 enables kernel BUG_ON(cwnd \u003c= in_flight) and divide-by-zero paths in congestion control (e.g. tcp_cong_avoid_ai / hybla / illinois), matching the fix description of potential zero-divides and yielding a host DoS."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:54:45.858Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/29e13f6b38f0816af2012e0725507754e8f4569c"
        },
        {
          "url": "https://git.kernel.org/stable/c/42726877453afdbe1508a8a96884ea907741d9a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f2845e1504a3bc4f3381394f057e8b63cb5f3f7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/602b338e3c3cd7f935f3f5011882961d074e5ac1"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ba2b4ac35935f05ac98cff722f36ba07d62270e"
        },
        {
          "url": "https://git.kernel.org/stable/c/90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa7f333efd1138a68517a6a6a69ae540dd59d800"
        },
        {
          "url": "https://git.kernel.org/stable/c/38ca71a24cd4845021eed35fd2594d89dba9a5a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/11825765291a93d8e7f44230da67b9f607c777bf"
        }
      ],
      "title": "tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49330",
    "datePublished": "2025-02-26T02:10:50.554Z",
    "dateReserved": "2025-02-26T02:08:31.538Z",
    "dateUpdated": "2026-08-05T08:54:45.858Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.