CVE-2023-52976

high

Published 2024-04-30 · Modified 2024-04-30

CVSS v3

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VIR risk

8.0

Description

In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

OS impact

OS	Version	Status	Fixed in
rhel	9	fixed
sles		affected
debian	bookworm	fixed	`6.1.11-1`
debian	bullseye	fixed	`5.10.178-1`
debian	forky	fixed	`6.1.11-1`
debian	sid	fixed	`6.1.11-1`
debian	trixie	fixed	`6.1.11-1`

References

💬 Discuss CVE-2023-52976 on VIR Community →

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.