CVE-2025-37996 (GCVE-0-2025-37996)

Vulnerability from cvelistv5 – Published: 2025-05-29 13:15 – Updated: 2025-05-29 13:15
VLAI?
Title
KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort() Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the initialization of the local memcache variable in user_mem_abort() conditional, leaving a codepath where it is used uninitialized via kvm_pgtable_stage2_map(). This can fail on any path that requires a stage-2 allocation without transition via a permission fault or dirty logging. Fix this by making sure that memcache is always valid.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fce886a6020734d6253c2c5a3bc285e385cc5496 , < a26d50f8a4a5049e956984797b5d0dedea4bbb18 (git)
Affected: fce886a6020734d6253c2c5a3bc285e385cc5496 , < 157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c (git)
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    Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.14.7 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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