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CVE-2026-90318

fat: release buffer head after rebuilding parent

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: fat: release buffer head after rebuilding parent fat_scan_logstart() leaves the matching directory entry's buffer head in sinfo.bh for the caller to release, just like fat_scan(). fat_rebuild_parent() uses the directory entry to rebuild the parent inode for the nostale_ro NFS export path, but does not release sinfo.bh after a successful scan. Release it once fat_build_inode() has consumed the directory entry data.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in 5e44b6944e11fd6647f028219ad0be4e85e9acee; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in d2a86329152c69a6200c15b2bf618755f8563826; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in 0f18d712ba9c980e05b7e33a27cde4fe3ed2d393; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in e38587d98d1ceac608420052c0cdd901d25878f3; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in c6a67aa438179cad40f8ae45469e304338d65c0a; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in 571ea4263d69df1b48578e4314a828ecd0604755; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in 7565e44507634514e3e1899d3acad3de43f7a2c1; From f1e6fb0ab451dae8523fbb8c119a653b2730e938 · fixed in 83e98dbf19ab64e8528e101e20f8d50e1aaa68a8

  • Linux Linux

    3.10

  • KernelLinux

    From 3.10.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6

References 8

git.kernel.org