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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-89794

ksmbd: zero pipe read compound padding

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2_read_pipe() allocates only the payload size, so the alignment padding can expose up to seven bytes of uninitialized kernel heap memory. Allocate the aligned size and clear the unused tail before pinning the response buffer.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 9f297df20d93411c0b4ddad7f88ba04a7cd36e77 to < c7516bdf7d2c1a64b14a9f444e2ee58c12c384aeaffected
  • e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d to < 134d980491b435e5cdb3171225e2506ff17867d1affected
  • e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d to < f188a400dd5285fec5a84548fe8dca49eee01155affected
  • e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d to < d83a9de7cecd401c3d3e00ed6371194dcd7313e4affected
  • e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d to < be15b8da4a82cf1e1f9880b2661b90770606eec1affected
  • e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d to < 73f860489e3be2245598d1819226304fc5b87291affected
  • f2283680a80571ca82d710bc6ecd8f8beac67d63affected
  • 6.1.71 to < 6.1.191affected
  • 5.15.145 to < 5.16affected

Linux Linux

Default version status: affected

  • 6.6affected
  • 0 to < 6.6unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.110 to ≤ 6.12.*unaffected
  • 6.18.51 to ≤ 6.18.*unaffected
  • 7.2.5 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References