Vulnerability Database

296,202

Total vulnerabilities in the database

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, 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]

  • Published: Mar 27, 2025
  • Updated: May 4, 2025
  • CVE: CVE-2023-52976
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 6.2-rc1 6.2-rc1.x
linux / linux_kernel 6.2-rc2 6.2-rc2.x
linux / linux_kernel 6.2-rc3 6.2-rc3.x
linux / linux_kernel 6.2-rc4 6.2-rc4.x
linux / linux_kernel 6.2-rc5 6.2-rc5.x
linux / linux_kernel 6.2-rc6 6.2-rc6.x
linux / linux_kernel 5.1.16 5.4.232
linux / linux_kernel 5.5 5.10.168
linux / linux_kernel 5.11 5.15.93
linux / linux_kernel 5.16 6.1.11