CVE-2023-52976
Medium
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]
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedMar 27, 2025
First seenMar 27, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.4.232, 5.10.168, 5.15.93, 6.1.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.1.16 ≤ v < 5.4.232, 5.5 ≤ v < 5.10.168, 5.11 ≤ v < 5.15.93, 5.16 ≤ v < 6.1.11, 6.2 | 5.4.232, 5.10.168, 5.15.93, 6.1.11 |
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