CVE-2023-5717
Out-of-bounds write in Linux kernel's Linux Kernel Performance Events (perf) component
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | linux |
| Product | kernel |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 25, 2023 |
| Last Updated | Feb 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux kernel
Be the first to know when new high vulnerabilities affecting linux kernel are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Linux / Kernel
4.4 < 6.6
References
git.kernel.org: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/events?id=32671e3799ca2e4590773fd0e63aaa4229e50c06 kernel.dance: https://kernel.dance/32671e3799ca2e4590773fd0e63aaa4229e50c06 lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
Credits
Budimir Markovic