CVE-2024-26598

Summary

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache

There is a potential UAF scenario in the case of an LPI translation cache hit racing with an operation that invalidates the cache, such as a DISCARD ITS command. The root of the problem is that vgic_its_check_cache() does not elevate the refcount on the vgic_irq before dropping the lock that serializes refcount changes.

Have vgic_its_check_cache() raise the refcount on the returned vgic_irq and add the corresponding decrement after queueing the interrupt.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < d04acadb6490aa3314f9c9e087691e55de153b88affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < ba7be666740847d967822bed15500656b26bc703affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < 12c2759ab1343c124ed46ba48f27bd1ef5d2dff4affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < dba788e25f05209adf2b0175eb1691dc89fb1ba6affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < 65b201bf3e9af1b0254243a5881390eda56f72d1affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < dd3956a1b3dd11f46488c928cb890d6937d1ca80affected
LinuxLinux6211753fdfd05af9e08f54c8d0ba3ee516034878 < ad362fe07fecf0aba839ff2cc59a3617bd42c33faffected
LinuxLinux3.11affected
LinuxLinux0 < 3.11unaffected
LinuxLinux5.4.269 <= 5.4.*unaffected
LinuxLinux5.10.209 <= 5.10.*unaffected
LinuxLinux5.15.148 <= 5.15.*unaffected
LinuxLinux6.1.75 <= 6.1.*unaffected
LinuxLinux6.6.14 <= 6.6.*unaffected
LinuxLinux6.7.2 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References