CVE-2025-68185

Unknown

Description

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.

SeverityUnknown
CVSS—
Exploit probability—
ProductLinux
PublishedDec 16, 2025
First seenDec 16, 2025

How to fix

Update
  • Linux Linux6025f641a0e30afdc5aa62017397b1860ad9f677, e6cafe71eb3b5579b245ba1bd528a181e77f3df1, fa4daf7d11e45b72aad5d943a7ab991f869fff79, 504b3fb9948a9e96ebbabdee0d33966a8bab15cb, eacfd08b26a062f1095b18719715bc82ad35312e, 40be5b9080114f18b0cea386db415b68a7273c1a, f5e570eaab36a110c6ffda32b87c51170990c2d1, a890a2e339b929dbd843328f9a92a1625404fe63 or later

Affected products

ProductAffected versionsFixed in
Linux Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 6025f641a0e30afdc5aa62017397b1860ad9f677, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < e6cafe71eb3b5579b245ba1bd528a181e77f3df1, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < fa4daf7d11e45b72aad5d943a7ab991f869fff79, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 504b3fb9948a9e96ebbabdee0d33966a8bab15cb, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < eacfd08b26a062f1095b18719715bc82ad35312e, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 40be5b9080114f18b0cea386db415b68a7273c1a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < f5e570eaab36a110c6ffda32b87c51170990c2d1, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < a890a2e339b929dbd843328f9a92a1625404fe63, 2.6.126025f641a0e30afdc5aa62017397b1860ad9f677, e6cafe71eb3b5579b245ba1bd528a181e77f3df1, fa4daf7d11e45b72aad5d943a7ab991f869fff79, 504b3fb9948a9e96ebbabdee0d33966a8bab15cb, eacfd08b26a062f1095b18719715bc82ad35312e, 40be5b9080114f18b0cea386db415b68a7273c1a, f5e570eaab36a110c6ffda32b87c51170990c2d1, a890a2e339b929dbd843328f9a92a1625404fe63

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