git.kernel.org
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=fd0815f632c24878e325821943edccc7fde947a2 CVE-2023-2235
HIGH
Use-after-free in Linux kernel's Performance Events subsystem
Record summary
CVE-2023-2235 has a selected CVSS score of 7.8 (high).
Description
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation. The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability. We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactTotal
CISA Coordinator · SSVC 2.0.3 · Evaluated Mar 5, 2025 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Default status: unaffected | CVE List | 5.13 to < 6.3 | affected |
References
4kernel.dance
https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2 nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2023-2235 security.netapp.com
https://security.netapp.com/advisory/ntap-20230609-0002