CVE-2026-31569 (GCVE-0-2026-31569)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:35 – Updated: 2026-05-11 22:11
VLAI
Title
LoongArch: KVM: Handle the case that EIOINTC's coremap is empty
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Handle the case that EIOINTC's coremap is empty EIOINTC's coremap in eiointc_update_sw_coremap() can be empty, currently we get a cpuid with -1 in this case, but we actually need 0 because it's similar as the case that cpuid >= 4. This fix an out-of-bounds access to kvm_arch::phyid_map::phys_map[].
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3956a52bc05bd811082a3c9d2b423ee957e6fefc , < 126053d0a685bf1f2e98db8966386f38b2336338 (git)
Affected: 3956a52bc05bd811082a3c9d2b423ee957e6fefc , < 2a0cbcd28ecf6e0b88fa498bebb94bd1be61a7c3 (git)
Affected: 3956a52bc05bd811082a3c9d2b423ee957e6fefc , < b97bd69eb0f67b5f961b304d28e9ba45e202d841 (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Detection rules are retrieved from Rulezet.