A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation. If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer. We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.
Fix
Public exploits 1
- uthrasri/CVE-2023-5717 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 4
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/events?id=32671e3799ca2e4590773fd0e63aaa4229e50c06 Mailing List, Patch
- https://kernel.dance/32671e3799ca2e4590773fd0e63aaa4229e50c06 Patch
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/events?id=32671e3799ca2e4590773fd0e63aaa4229e50c06 Mailing List, Patch
- https://kernel.dance/32671e3799ca2e4590773fd0e63aaa4229e50c06 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linuxNVD modified 2026-10-14 22:17
Affected (CPE criteria) 7
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:*
References 12
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/events?id=32671e3799ca2e4590773fd0e63aaa4229e50c06 Mailing List, Patch
- https://kernel.dance/32671e3799ca2e4590773fd0e63aaa4229e50c06 Patch
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html Mailing List, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/events?id=32671e3799ca2e4590773fd0e63aaa4229e50c06 Mailing List, Patch
- https://kernel.dance/32671e3799ca2e4590773fd0e63aaa4229e50c06 Patch
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html