CVE-2023-52893
gsmi: fix null-deref in gsmi_get_variable
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
21 Aug 2024Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
gsmi: fix null-deref in gsmi_get_variable
We can get EFI variables without fetching the attribute, so we must
allow for that in gsmi.
commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore
access layer") added a new get_variable call with attr=NULL, which
triggers panic in gsmi.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410ahttps://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfdhttps://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4bhttps://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5