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.
References
Link | Resource |
---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7ea | Patch Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890 | Patch Vendor Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=2025726 | Issue Tracking Third Party Advisory |
https://www.openwall.com/lists/oss-security/2021/11/25/1 | Exploit Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html | Mailing List Third Party Advisory |
https://www.debian.org/security/2022/dsa-5096 | Third Party Advisory |
https://www.oracle.com/security-alerts/cpujul2022.html | Patch Third Party Advisory |
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Information
Published : 2022-03-03 14:15
Updated : 2023-02-22 09:46
NVD link : CVE-2021-4002
Mitre link : CVE-2021-4002
JSON object : View
CWE
CWE-401
Missing Release of Memory after Effective Lifetime
Products Affected
oracle
- communications_cloud_native_core_network_exposure_function
- communications_cloud_native_core_binding_support_function
- communications_cloud_native_core_policy
fedoraproject
- fedora
linux
- linux_kernel
debian
- debian_linux