Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-50433

efi: ssdt: Don't free memory if ACPI table was loaded successfully

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

Description

In the Linux kernel, the following vulnerability has been resolved: efi: ssdt: Don't free memory if ACPI table was loaded successfully Amadeusz reports KASAN use-after-free errors introduced by commit 3881ee0b1edc ("efi: avoid efivars layer when loading SSDTs from variables"). The problem appears to be that the memory that holds the new ACPI table is now freed unconditionally, instead of only when the ACPI core reported a failure to load the table. So let's fix this, by omitting the kfree() on success.

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

  • 3881ee0b1edce0ece72d24b7c74f46b73bd6dcba to < 11497fd69cd2282538ec6eb4cda1d16fc061233daffected
  • 3881ee0b1edce0ece72d24b7c74f46b73bd6dcba to < 4b017e59f01097f19b938f6dc4dc2c4720701610affected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.0.4 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References