CVE-2025-68185

Summary

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

nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing

Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack.

Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6025f641a0e30afdc5aa62017397b1860ad9f677affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e6cafe71eb3b5579b245ba1bd528a181e77f3df1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fa4daf7d11e45b72aad5d943a7ab991f869fff79affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 504b3fb9948a9e96ebbabdee0d33966a8bab15cbaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eacfd08b26a062f1095b18719715bc82ad35312eaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 40be5b9080114f18b0cea386db415b68a7273c1aaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f5e570eaab36a110c6ffda32b87c51170990c2d1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a890a2e339b929dbd843328f9a92a1625404fe63affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.4.302 <= 5.4.*unaffected
LinuxLinux5.10.247 <= 5.10.*unaffected
LinuxLinux5.15.197 <= 5.15.*unaffected
LinuxLinux6.1.159 <= 6.1.*unaffected
LinuxLinux6.6.117 <= 6.6.*unaffected
LinuxLinux6.12.58 <= 6.12.*unaffected
LinuxLinux6.17.8 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References