CVE - CVE-2023-2235

CVE-ID
CVE-2023-2235	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2 URL:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2 MISC:https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2 URL:https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2
Assigning CNA
Google LLC
Date Record Created
20230421	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230421)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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