Skip to content
CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2023-52976

efi: fix potential NULL deref in efi_mem_reserve_persistent

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

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]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 18df7577adae6c6c778bf774b3aebcacbc1fb439 to < d92a25627bcdf264183670da73c9a60c0bac327eaffected
  • 18df7577adae6c6c778bf774b3aebcacbc1fb439 to < 87d4ff18738fd71e7e3c10827c80257da6283697affected
  • 18df7577adae6c6c778bf774b3aebcacbc1fb439 to < d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23caffected
  • 18df7577adae6c6c778bf774b3aebcacbc1fb439 to < a2e6a9ff89f13666a1c3ff7195612ab949ea9afcaffected
  • 18df7577adae6c6c778bf774b3aebcacbc1fb439 to < 966d47e1f27c45507c5df82b2a2157e5a4fd3909affected
  • b5961ecad7121fec138ebee7d9eba4863f9dc6e7affected
  • 5.1.16 to < 5.2affected

Linux Linux

Default version status: affected

  • 5.2affected
  • 0 to < 5.2unaffected
  • 5.4.232 to ≤ 5.4.*unaffected
  • 5.10.168 to ≤ 5.10.*unaffected
  • 5.15.93 to ≤ 5.15.*unaffected
  • 6.1.11 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References