CVE-2026-98447 PUBLISHED

xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

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

xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots

LOLLM noticed that the inode btree root formatting methods copy too many bytes -- there's only one set of keys in node blocks, not two. This causes memory corruption of whatever's beyond the buffers.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from f0415af60f482a2192065be8b334b409495ca8a3 to d46492fb8018d12d00651b06b9d240e747110b38 (excl.)
  • affected from f0415af60f482a2192065be8b334b409495ca8a3 to 2703b954d306ebfe3b11e33e259759329c11b690 (excl.)
  • affected from f0415af60f482a2192065be8b334b409495ca8a3 to fe2f9135df43db849e74f03956d322ac20b59af7 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.14 is affected
  • unaffected from 0 to 6.14 (excl.)
  • unaffected from 6.18.55 to 6.18.* (incl.)
  • unaffected from 7.2.9 to 7.2.* (incl.)
  • unaffected from 7.3-rc5 to * (incl.)

References