Vulnerability Database

309,364

Total vulnerabilities in the database

CVE-2025-37996

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.

  • Published: May 29, 2025
  • Updated: Nov 15, 2025
  • CVE: CVE-2025-37996
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 6.14 6.14.7
linux / linux_kernel 6.15-rc1 6.15-rc1.x
linux / linux_kernel 6.15-rc2 6.15-rc2.x
linux / linux_kernel 6.15-rc3 6.15-rc3.x
linux / linux_kernel 6.15-rc4 6.15-rc4.x
linux / linux_kernel 6.15-rc5 6.15-rc5.x