CVE-2021-4002
MEDIUM 4.4EPSS 0.5%
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
- Affected
- kernel
- CVSS v3.1 NVD
- 4.4 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - CVSS v2.0 NVD
- 3.6 LOW
AV:L/AC:L/Au:N/C:P/I:P/A:N - EPSS
- 0.52% chance of exploitation in the next 30 days, 43rd percentile
- Published
- 2022-03-03
- Updated
- 2024-08-03
Proof-of-concept exploits (1)
Security advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8d…
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eea…
- https://bugzilla.redhat.com/show_bug.cgi?id=2025726
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html