CVE-2021-4002
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.5%
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
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 products
n/a · kernelReferences
https://bugzilla.redhat.com/show_bug.cgi?id=2025726https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7eahttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlhttps://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlhttps://www.debian.org/security/2022/dsa-5096https://www.openwall.com/lists/oss-security/2021/11/25/1https://www.oracle.com/security-alerts/cpujul2022.html