Vulnerability-Lookup

BDU:2024-07163

Vulnerability from fstec - Published: 26.01.2022

Title

Уязвимость функции vmx_enter_smm файла arch/x86/kvm/vmx/vmx.c подсистемы виртуализации KVM ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Description

Уязвимость функции vmx_enter_smm файла arch/x86/kvm/vmx/vmx.c подсистемы виртуализации KVM ядра операционной системы Linux связана с принудительным выходом из вложенной операции виртуализации при переключении состояния SMM. Эксплуатация позволяющая нарушителю вызвать отказ в обслуживании

Severity ?


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

Vendor

Red Hat Inc., Сообщество свободного программного обеспечения, Amazon.com Inc.

Software Name

Red Hat Enterprise Linux, Debian GNU/Linux, Linux, Amazon Linux 2

Software Version

8 (Red Hat Enterprise Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 9 (Red Hat Enterprise Linux), от 5.11 до 5.15.18 включительно (Linux), от 5.16.0 до 5.16.4 включительно (Linux), до 5.10-2022-011 (Amazon Linux 2), от 4.0 до 5.10.96 включительно (Linux)

Possible Mitigations

Использование рекомендаций производителя: Для Linux: https://git.kernel.org/linus/f7e570780efc5cec9b2ed1e0472a7da14e864fdb https://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f https://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e https://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7 https://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.97 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5 https://lore.kernel.org/linux-cve-announce/2024062009-CVE-2022-48763-862a@gregkh/ Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/CVE-2022-48763 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2022-48763 Для Amazon Linux: https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-011.html Компенсирующие меры: - отключение неиспользуемых учетных записей, а также учетных записей недоверенных пользователей; - принудительная смена паролей пользователей; - ограничение доступа к командной строке для недоверенных пользователей; - использование антивирусных средств защиты; - мониторинг действий пользователей.

Reference

https://access.redhat.com/security/cve/CVE-2022-48763 https://bugzilla.redhat.com/show_bug.cgi?id=2293372 https://explore.alas.aws.amazon.com/CVE-2022-48763.html https://git.kernel.org/linus/f7e570780efc5cec9b2ed1e0472a7da14e864fdb https://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f https://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e https://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7 https://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.97 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5 https://lore.kernel.org/linux-cve-announce/2024062009-CVE-2022-48763-862a@gregkh/ https://security-tracker.debian.org/tracker/CVE-2022-48763 https://vuldb.com/?id.269194 https://www.cve.org/CVERecord?id=CVE-2022-48763

CWE

CWE-372

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:H/Au:S/C:N/I:N/A:C",
  "CVSS 3.0": "AV:L/AC:H/PR:H/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": "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, Amazon.com Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "8 (Red Hat Enterprise Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 9 (Red Hat Enterprise Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.18 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16.0 \u0434\u043e 5.16.4 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u0434\u043e 5.10-2022-011 (Amazon Linux 2), \u043e\u0442 4.0 \u0434\u043e 5.10.96 \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": "\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 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\n\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/linus/f7e570780efc5cec9b2ed1e0472a7da14e864fdb\nhttps://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f\nhttps://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e\nhttps://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7\nhttps://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.97\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5\nhttps://lore.kernel.org/linux-cve-announce/2024062009-CVE-2022-48763-862a@gregkh/\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.:\nhttps://access.redhat.com/security/cve/CVE-2022-48763\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2022-48763\n\n\u0414\u043b\u044f Amazon Linux:\nhttps://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-011.html\n\n\u041a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0440\u044b:\n- \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043d\u0435\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0443\u0447\u0435\u0442\u043d\u044b\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0443\u0447\u0435\u0442\u043d\u044b\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u043d\u0435\u0434\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u044b\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439;\n- \u043f\u0440\u0438\u043d\u0443\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0441\u043c\u0435\u043d\u0430 \u043f\u0430\u0440\u043e\u043b\u0435\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439;\n- \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0435 \u0434\u043b\u044f \u043d\u0435\u0434\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u044b\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439;\n- \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0430\u043d\u0442\u0438\u0432\u0438\u0440\u0443\u0441\u043d\u044b\u0445 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u0437\u0430\u0449\u0438\u0442\u044b;\n- \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439.",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "26.01.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "05.12.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "17.09.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-07163",
  "\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-2022-48763",
  "\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": "Red Hat Enterprise Linux, Debian GNU/Linux, Linux, Amazon Linux 2",
  "\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": "Red Hat Inc. Red Hat Enterprise 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 Debian GNU/Linux 11 , \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 12 , 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 5.16.0 \u0434\u043e 5.16.4 \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 5.10.0 \u0434\u043e 5.10.96 \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 15.15.0 \u0434\u043e 5.15.18 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , Amazon.com Inc. Amazon Linux 2 \u0434\u043e 5.10-2022-011 ",
  "\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 vmx_enter_smm \u0444\u0430\u0439\u043b\u0430 arch/x86/kvm/vmx/vmx.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 KVM \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": "\u041d\u0435\u043f\u043e\u043b\u043d\u043e\u0435 \u0440\u0430\u0441\u043f\u043e\u0437\u043d\u0430\u0432\u0430\u043d\u0438\u0435 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f (CWE-372)",
  "\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 vmx_enter_smm \u0444\u0430\u0439\u043b\u0430 arch/x86/kvm/vmx/vmx.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 KVM \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 \u043f\u0440\u0438\u043d\u0443\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u0438\u0437 \u0432\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f SMM. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \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",
  "\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://access.redhat.com/security/cve/CVE-2022-48763\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2293372\nhttps://explore.alas.aws.amazon.com/CVE-2022-48763.html\nhttps://git.kernel.org/linus/f7e570780efc5cec9b2ed1e0472a7da14e864fdb\nhttps://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f\nhttps://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e\nhttps://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7\nhttps://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.97\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5\nhttps://lore.kernel.org/linux-cve-announce/2024062009-CVE-2022-48763-862a@gregkh/\nhttps://security-tracker.debian.org/tracker/CVE-2022-48763\nhttps://vuldb.com/?id.269194\nhttps://www.cve.org/CVERecord?id=CVE-2022-48763",
  "\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-372",
  "\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": "\u041d\u0438\u0437\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 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 3,8)\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 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4,1)\n\u041d\u0435\u0442 \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \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 4.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 0)"
}

CVE-2022-48763 (GCVE-0-2022-48763)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-12-23 13:20

Title

KVM: x86: Forcibly leave nested virt when SMM state is toggled

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVM_SET_VCPU_EVENTS or KVM_SYNC_X86_EVENTS. If userspace forces the vCPU out of SMM while it's post-VMXON and then injects an SMI, vmx_enter_smm() will overwrite vmx->nested.smm.vmxon and end up with both vmxon=false and smm.vmxon=false, but all other nVMX state allocated. Don't attempt to gracefully handle the transition as (a) most transitions are nonsencial, e.g. forcing SMM while L2 is running, (b) there isn't sufficient information to handle all transitions, e.g. SVM wants access to the SMRAM save state, and (c) KVM_SET_VCPU_EVENTS must precede KVM_SET_NESTED_STATE during state restore as the latter disallows putting the vCPU into L2 if SMM is active, and disallows tagging the vCPU as being post-VMXON in SMM if SMM is not active. Abuse of KVM_SET_VCPU_EVENTS manifests as a WARN and memory leak in nVMX due to failure to free vmcs01's shadow VMCS, but the bug goes far beyond just a memory leak, e.g. toggling SMM on while L2 is active puts the vCPU in an architecturally impossible state. WARNING: CPU: 0 PID: 3606 at free_loaded_vmcs arch/x86/kvm/vmx/vmx.c:2665 [inline] WARNING: CPU: 0 PID: 3606 at free_loaded_vmcs+0x158/0x1a0 arch/x86/kvm/vmx/vmx.c:2656 Modules linked in: CPU: 1 PID: 3606 Comm: syz-executor725 Not tainted 5.17.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:free_loaded_vmcs arch/x86/kvm/vmx/vmx.c:2665 [inline] RIP: 0010:free_loaded_vmcs+0x158/0x1a0 arch/x86/kvm/vmx/vmx.c:2656 Code: <0f> 0b eb b3 e8 8f 4d 9f 00 e9 f7 fe ff ff 48 89 df e8 92 4d 9f 00 Call Trace: <TASK> kvm_arch_vcpu_destroy+0x72/0x2f0 arch/x86/kvm/x86.c:11123 kvm_vcpu_destroy arch/x86/kvm/../../../virt/kvm/kvm_main.c:441 [inline] kvm_destroy_vcpus+0x11f/0x290 arch/x86/kvm/../../../virt/kvm/kvm_main.c:460 kvm_free_vcpus arch/x86/kvm/x86.c:11564 [inline] kvm_arch_destroy_vm+0x2e8/0x470 arch/x86/kvm/x86.c:11676 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1217 [inline] kvm_put_kvm+0x4fa/0xb00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1250 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1273 __fput+0x286/0x9f0 fs/file_table.c:311 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xb29/0x2a30 kernel/exit.c:806 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK>

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/080dbe7e9b86a0392…
	https://git.kernel.org/stable/c/e302786233e6bc512…
	https://git.kernel.org/stable/c/b4c0d89c92e957ecc…
	https://git.kernel.org/stable/c/f7e570780efc5cec9…

Impacted products

Vendor

Product

Version

Linux

Affected: 72e9cbdb43384ceacc49e2fb6b8c8fb7c5988778 , < 080dbe7e9b86a0392d8dffc00d9971792afc121f (git)
Affected: 72e9cbdb43384ceacc49e2fb6b8c8fb7c5988778 , < e302786233e6bc512986d007c96458ccf5ca21c7 (git)
Affected: 72e9cbdb43384ceacc49e2fb6b8c8fb7c5988778 , < b4c0d89c92e957ecccce12e66b63875d0cc7af7e (git)
Affected: 72e9cbdb43384ceacc49e2fb6b8c8fb7c5988778 , < f7e570780efc5cec9b2ed1e0472a7da14e864fdb (git)

Linux

Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.10.97 , ≤ 5.10.* (semver)
Unaffected: 5.15.19 , ≤ 5.15.* (semver)
Unaffected: 5.16.5 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-20T14:49:19.727455Z",
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    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.97",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Forcibly leave nested virt when SMM state is toggled\n\nForcibly leave nested virtualization operation if userspace toggles SMM\nstate via KVM_SET_VCPU_EVENTS or KVM_SYNC_X86_EVENTS.  If userspace\nforces the vCPU out of SMM while it\u0027s post-VMXON and then injects an SMI,\nvmx_enter_smm() will overwrite vmx-\u003enested.smm.vmxon and end up with both\nvmxon=false and smm.vmxon=false, but all other nVMX state allocated.\n\nDon\u0027t attempt to gracefully handle the transition as (a) most transitions\nare nonsencial, e.g. forcing SMM while L2 is running, (b) there isn\u0027t\nsufficient information to handle all transitions, e.g. SVM wants access\nto the SMRAM save state, and (c) KVM_SET_VCPU_EVENTS must precede\nKVM_SET_NESTED_STATE during state restore as the latter disallows putting\nthe vCPU into L2 if SMM is active, and disallows tagging the vCPU as\nbeing post-VMXON in SMM if SMM is not active.\n\nAbuse of KVM_SET_VCPU_EVENTS manifests as a WARN and memory leak in nVMX\ndue to failure to free vmcs01\u0027s shadow VMCS, but the bug goes far beyond\njust a memory leak, e.g. toggling SMM on while L2 is active puts the vCPU\nin an architecturally impossible state.\n\n  WARNING: CPU: 0 PID: 3606 at free_loaded_vmcs arch/x86/kvm/vmx/vmx.c:2665 [inline]\n  WARNING: CPU: 0 PID: 3606 at free_loaded_vmcs+0x158/0x1a0 arch/x86/kvm/vmx/vmx.c:2656\n  Modules linked in:\n  CPU: 1 PID: 3606 Comm: syz-executor725 Not tainted 5.17.0-rc1-syzkaller #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n  RIP: 0010:free_loaded_vmcs arch/x86/kvm/vmx/vmx.c:2665 [inline]\n  RIP: 0010:free_loaded_vmcs+0x158/0x1a0 arch/x86/kvm/vmx/vmx.c:2656\n  Code: \u003c0f\u003e 0b eb b3 e8 8f 4d 9f 00 e9 f7 fe ff ff 48 89 df e8 92 4d 9f 00\n  Call Trace:\n   \u003cTASK\u003e\n   kvm_arch_vcpu_destroy+0x72/0x2f0 arch/x86/kvm/x86.c:11123\n   kvm_vcpu_destroy arch/x86/kvm/../../../virt/kvm/kvm_main.c:441 [inline]\n   kvm_destroy_vcpus+0x11f/0x290 arch/x86/kvm/../../../virt/kvm/kvm_main.c:460\n   kvm_free_vcpus arch/x86/kvm/x86.c:11564 [inline]\n   kvm_arch_destroy_vm+0x2e8/0x470 arch/x86/kvm/x86.c:11676\n   kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1217 [inline]\n   kvm_put_kvm+0x4fa/0xb00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1250\n   kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1273\n   __fput+0x286/0x9f0 fs/file_table.c:311\n   task_work_run+0xdd/0x1a0 kernel/task_work.c:164\n   exit_task_work include/linux/task_work.h:32 [inline]\n   do_exit+0xb29/0x2a30 kernel/exit.c:806\n   do_group_exit+0xd2/0x2f0 kernel/exit.c:935\n   get_signal+0x4b0/0x28c0 kernel/signal.c:2862\n   arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868\n   handle_signal_work kernel/entry/common.c:148 [inline]\n   exit_to_user_mode_loop kernel/entry/common.c:172 [inline]\n   exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207\n   __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]\n   syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300\n   do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n   \u003c/TASK\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:20:21.783Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb"
        }
      ],
      "title": "KVM: x86: Forcibly leave nested virt when SMM state is toggled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48763",
    "datePublished": "2024-06-20T11:13:40.504Z",
    "dateReserved": "2024-06-20T11:09:39.060Z",
    "dateUpdated": "2025-12-23T13:20:21.783Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

BDU:2024-07163

CVE-2022-48763 (GCVE-0-2022-48763)

Tags

Sightings

Nomenclature