Use After Free in Linux Kernel
CVE-2023-1872
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerabili…
Vulnerability class: Use-After-Free
EPSS: 0.000 (8.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Kernel — versions 5.7
Weakness classification (CWE)
References
- git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/
- git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/
- lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- security.netapp.com/advisory/ntap-20230601-0002/
- packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095…
Frequently asked questions
- What is CVE-2023-1872?
- CVE-2023-1872 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-04-12.
- How severe is CVE-2023-1872?
- High severity. CVSS v3 base score is 7.8 out of 10.