CVE-2023-52576 (GCVE-0-2023-52576)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:59 – Updated: 2025-05-04 07:39
VLAI?
Title
x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()
Summary
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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fee3ff99bc67604fba77f19da0106f3ec52b1956 , < eef16bfdb212da60f5144689f2967fb25b051a2b (git)
Affected: fee3ff99bc67604fba77f19da0106f3ec52b1956 , < d2dfbc0e3b7a04c2d941421a958dc31c897fb204 (git)
Affected: fee3ff99bc67604fba77f19da0106f3ec52b1956 , < 34cf99c250d5cd2530b93a57b0de31d3aaf8685b (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.1.56 , ≤ 6.1.* (semver)
Unaffected: 6.5.6 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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