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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2023-52576

x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.

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

  • fee3ff99bc67604fba77f19da0106f3ec52b1956 to < eef16bfdb212da60f5144689f2967fb25b051a2baffected
  • fee3ff99bc67604fba77f19da0106f3ec52b1956 to < d2dfbc0e3b7a04c2d941421a958dc31c897fb204affected
  • fee3ff99bc67604fba77f19da0106f3ec52b1956 to < 34cf99c250d5cd2530b93a57b0de31d3aaf8685baffected

Linux Linux

Default version status: affected

  • 5.13affected
  • 0 to < 5.13unaffected
  • 6.1.56 to ≤ 6.1.*unaffected
  • 6.5.6 to ≤ 6.5.*unaffected
  • 6.6 to ≤ *unaffected

References