Vulnerability-Lookup

BDU:2019-03624 (CVE-2018-20856)

Vulnerability from fstec – Published: 2019-10-16 – Updated: 2025-02-11 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции __blk_drain_queue() в файле block/blk-core.c ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на целостность данных, получить несанкционированный доступ к защищаемой информации, а также вызвать отказ в обслуживании

Summary

Уязвимость функции __blk_drain_queue() в файле block/blk-core.c ядра операционной системы Linux связана с использованием после освобождения при обработке ошибок. Эксплуатация уязвимости может позволить нарушителю оказать воздействие на целостность данных, получить несанкционированный доступ к защищаемой информации, а также вызвать отказ в обслуживании

Severity

6.8 (Medium) CVSS 2.0


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

7.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-416 - Использование после освобождения

Aliases

CVE-2018-20856

References

38 references

URL
http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackwa…
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-L…
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-L…
https://access.redhat.com/errata/RHSA-2019:3055
https://access.redhat.com/errata/RHSA-2019:3076
https://access.redhat.com/errata/RHSA-2019:3089
https://access.redhat.com/errata/RHSA-2019:3217
https://access.redhat.com/errata/RHSA-2020:0100
https://access.redhat.com/errata/RHSA-2020:0103
https://access.redhat.com/errata/RHSA-2020:0543
https://access.redhat.com/errata/RHSA-2020:0664
https://access.redhat.com/errata/RHSA-2020:0698
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20856
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5464…
https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.69
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.189
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.189
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
https://nvd.nist.gov/vuln/detail/CVE-2018-20856
https://seclists.org/bugtraq/2019/Aug/18
https://seclists.org/bugtraq/2019/Aug/26
https://security.netapp.com/advisory/ntap-20190905-0002/
https://security-tracker.debian.org/tracker/CVE-2018-20856
https://support.f5.com/csp/article/K14673240?utm_source=f5support&amp%3Butm_med…
https://ubuntu.com/security/notices/USN-4094-1
https://ubuntu.com/security/notices/USN-4116-1
https://ubuntu.com/security/notices/USN-4118-1
https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4116-1/
https://usn.ubuntu.com/4118-1/
https://usn.ubuntu.com/usn/usn-4094-1
https://usn.ubuntu.com/usn/usn-4116-1
https://usn.ubuntu.com/usn/usn-4118-1
https://www.cve.org/CVERecord?id=CVE-2018-20856
https://www.debian.org/security/2019/dsa-4497

Impacted products

4 products from 3 vendors

Vendors

ООО «РусБИТех-Астра», Canonical Ltd., Сообщество свободного программного обеспечения

Products

Astra Linux Special Edition (запись в едином реестре российских программ №369), Ubuntu, Debian GNU/Linux, Linux

Versions

1.5 «Смоленск» (Astra Linux Special Edition), 16.04 LTS (Ubuntu), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 8 (Debian GNU/Linux), от 4.0 до 4.4.188 включительно (Linux), от 4.5 до 4.9.188 включительно (Linux), от 4.10 до 4.14.68 включительно (Linux), от 4.15 до 4.18.6 включительно (Linux)

Product types

Operating system

Platforms

ООО «РусБИТех-Астра» Astra Linux Special Edition 1.5 «Смоленск» (запись в едином реестре российских программ №369), Canonical Ltd. Ubuntu 16.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 9, Canonical Ltd. Ubuntu 18.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 8, Сообщество свободного программного обеспечения Linux до 4.18.7

Mitigations

Для linux: https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.69 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.189 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.189 Для Debian: Обновление программного обеспечения(пакета linux) до 4.9.168-1+deb9u5 или более поздней версии Для Ubuntu: https://usn.ubuntu.com/4094-1 https://usn.ubuntu.com/4116-1 https://usn.ubuntu.com/4118-1 Для Astra Linux: https://wiki.astralinux.ru/astra-linux-se15-bulletin-20201201SE15

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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": "\u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb, Canonical Ltd., \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": "1.5 \u00ab\u0421\u043c\u043e\u043b\u0435\u043d\u0441\u043a\u00bb (Astra Linux Special Edition), 16.04 LTS (Ubuntu), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 8 (Debian GNU/Linux), \u043e\u0442 4.0 \u0434\u043e 4.4.188 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.5 \u0434\u043e 4.9.188 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.68 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.18.6 \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": "\u0414\u043b\u044f linux:\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.69\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.189\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.189\n\n\u0414\u043b\u044f Debian:\n\n\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(\u043f\u0430\u043a\u0435\u0442\u0430 linux) \u0434\u043e 4.9.168-1+deb9u5 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0437\u0434\u043d\u0435\u0439 \u0432\u0435\u0440\u0441\u0438\u0438\n\n\n\n\u0414\u043b\u044f Ubuntu:\n\nhttps://usn.ubuntu.com/4094-1\n\nhttps://usn.ubuntu.com/4116-1\nhttps://usn.ubuntu.com/4118-1\n\n\u0414\u043b\u044f Astra Linux:\nhttps://wiki.astralinux.ru/astra-linux-se15-bulletin-20201201SE15",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "30.07.2018",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "11.02.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "16.10.2019",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2019-03624",
  "\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-2018-20856",
  "\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": "Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Ubuntu, 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": "\u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.5 \u00ab\u0421\u043c\u043e\u043b\u0435\u043d\u0441\u043a\u00bb  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Canonical Ltd. Ubuntu 16.04 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 9 , Canonical Ltd. Ubuntu 18.04 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 8 , \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 \u0434\u043e 4.18.7 ",
  "\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 __blk_drain_queue() \u0432 \u0444\u0430\u0439\u043b\u0435 block/blk-core.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 \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0445, \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043d\u0435\u0441\u0430\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \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": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0441\u043b\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f (CWE-416)",
  "\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 __blk_drain_queue() \u0432 \u0444\u0430\u0439\u043b\u0435 block/blk-core.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 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u043e\u0441\u043b\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043e\u0448\u0438\u0431\u043e\u043a. \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 \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0445, \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043d\u0435\u0441\u0430\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \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": "http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html\nhttp://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html\nhttp://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html\nhttps://access.redhat.com/errata/RHSA-2019:3055\nhttps://access.redhat.com/errata/RHSA-2019:3076\nhttps://access.redhat.com/errata/RHSA-2019:3089\nhttps://access.redhat.com/errata/RHSA-2019:3217\nhttps://access.redhat.com/errata/RHSA-2020:0100\nhttps://access.redhat.com/errata/RHSA-2020:0103\nhttps://access.redhat.com/errata/RHSA-2020:0543\nhttps://access.redhat.com/errata/RHSA-2020:0664\nhttps://access.redhat.com/errata/RHSA-2020:0698\nhttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20856\nhttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24\nhttps://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.69\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.189\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.189\nhttps://lists.debian.org/debian-lts-announce/2019/08/msg00017.html\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20856\nhttps://seclists.org/bugtraq/2019/Aug/18\nhttps://seclists.org/bugtraq/2019/Aug/26\nhttps://security.netapp.com/advisory/ntap-20190905-0002/\nhttps://security-tracker.debian.org/tracker/CVE-2018-20856\nhttps://support.f5.com/csp/article/K14673240?utm_source=f5support\u0026amp%3Butm_medium=RSS\nhttps://ubuntu.com/security/notices/USN-4094-1\nhttps://ubuntu.com/security/notices/USN-4116-1\nhttps://ubuntu.com/security/notices/USN-4118-1\nhttps://usn.ubuntu.com/4094-1/\nhttps://usn.ubuntu.com/4116-1/\nhttps://usn.ubuntu.com/4118-1/\nhttps://usn.ubuntu.com/usn/usn-4094-1\nhttps://usn.ubuntu.com/usn/usn-4116-1\nhttps://usn.ubuntu.com/usn/usn-4118-1\nhttps://www.cve.org/CVERecord?id=CVE-2018-20856\nhttps://www.debian.org/security/2019/dsa-4497",
  "\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-416",
  "\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 6,8)\n\u0412\u044b\u0441\u043e\u043a\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 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)"
}

CVE-2018-20856 (GCVE-0-2018-20856)

Vulnerability from cvelistv5 – Published: 2019-07-26 04:40 – Updated: 2024-08-05 12:12

Summary

An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

24 references

URL	Tags
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan…	x_refsource_MISC
https://github.com/torvalds/linux/commit/54648cf1…	x_refsource_MISC
https://git.kernel.org/cgit/linux/kernel/git/torv…	x_refsource_MISC
https://usn.ubuntu.com/4094-1/	vendor-advisoryx_refsource_UBUNTU
https://seclists.org/bugtraq/2019/Aug/18	mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2019/dsa-4497	vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Aug/26	mailing-listx_refsource_BUGTRAQ
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
http://packetstormsecurity.com/files/154059/Slack…	x_refsource_MISC
https://usn.ubuntu.com/4116-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4118-1/	vendor-advisoryx_refsource_UBUNTU
https://security.netapp.com/advisory/ntap-2019090…	x_refsource_CONFIRM
http://packetstormsecurity.com/files/154408/Kerne…	x_refsource_MISC
https://support.f5.com/csp/article/K14673240?utm_…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:3076	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3055	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3089	vendor-advisoryx_refsource_REDHAT
http://packetstormsecurity.com/files/154951/Kerne…	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:3217	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0100	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0103	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0543	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0664	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0698	vendor-advisoryx_refsource_REDHAT

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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.

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.

Action not permitted

BDU:2019-03624 (CVE-2018-20856)

CVE-2018-20856 (GCVE-0-2018-20856)

Tags

Sightings

Nomenclature

Related by attack behaviour