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CVE-2026-89792

ksmbd: prevent out-of-bounds reads in share config responses

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.222, 6.1.189, 6.6.158, 6.9, 6.12.111, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the path length.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 88b7f1143b15b29cccb8392b4f38e75b7bb3e300 · fixed in df8aa4a09733c4d3974b1db32c1782b3aad3a151; From 51a6c2af9d20203ddeeaf73314ba8854b38d01bd · fixed in 0127f1c119bde40578f4d25f5d17333b4e75de8c; From a637fabac554270a851033f5ab402ecb90bc479c · fixed in fd636a87161def6e35876ab7943641ce457974c8; From a677ebd8ca2f2632ccdecbad7b87641274e15aac · fixed in ffa507f5f774cb4d45136b106989ebc051361263; From a677ebd8ca2f2632ccdecbad7b87641274e15aac · fixed in cd2bcee450bc94770be56c0b896c1a1dc6838bd8; From a677ebd8ca2f2632ccdecbad7b87641274e15aac · fixed in 61a8d06600c8c397f9a7e01940479d4c94a82f5f; From a677ebd8ca2f2632ccdecbad7b87641274e15aac · fixed in f25e93768fcc5d8287e50b1ec52a42e4c276df34; From 5.15.157 · fixed in 5.15.222; From 6.1.85 · fixed in 6.1.189; From 6.6.26 · fixed in 6.6.158; From 6.8.5 · fixed in 6.9

  • Linux Linux

    6.9

  • KernelLinux

    fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.9.0 · fixed in 6.18.53; From 6.13.0 · fixed in 7.2.6

References 7

git.kernel.org