CVE-2023-2235
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux Kernel | 5.13 < 6.3 | affected |
Weaknesses
- CWE-416: CWE-416 Use After Free
ADP Enrichment
CVE Program Container
Additional References
- https://security.netapp.com/advisory/ntap-20230609-0002/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2
- https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2
- https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2
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