2021-03-12
ALT-BU-2021-3789-1
Branch p8 update bulletin.
Package kernel-image-std-debug updated to version 4.9.260-alt0.M80P.1 for branch p8 in task 267529.
Closed vulnerabilities
Published: 2020-06-03
BDU:2020-05546
Уязвимость функции __split_huge_pmd (mm/huge_memory.c) ядра операционных систем Linux, позволяющая нарушителю выполнить произвольный код
Severity: HIGH (7.0)
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References:
Published: 2020-11-28
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2020-29368
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
Severity: HIGH (7.0)
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References:
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040
- https://security.netapp.com/advisory/ntap-20210108-0002/
- https://security.netapp.com/advisory/ntap-20210108-0002/