medium5.5
CVE-2023-52976
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…
Impact
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]
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.1.16 before 5.4.232 from 5.5 before 5.10.168 from 5.11 before 5.15.93 from 5.16 before 6.1.11 Version 6.2 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697
- https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909
- https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc
- https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c
- https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e