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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-31409

ksmbd: unset conn->binding on failed binding request

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn->binding on failed binding request When a multichannel SMB2_SESSION_SETUP request with SMB2_SESSION_REQ_FLAG_BINDING fails ksmbd sets conn->binding = true but never clears it on the error path. This leaves the connection in a binding state where all subsequent ksmbd_session_lookup_all() calls fall back to the global sessions table. This fix it by clearing conn->binding = false in the error path.

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

  • f5a544e3bab78142207e0242d22442db85ba1eff to < 7e8b270813079c785696bce8802a3f920665c88caffected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < d073870dab8f6dadced81d13d273ff0b21cb7f4eaffected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < 6ebef4a220a1ebe345de899ebb9ae394206fe921affected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < 89afe5e2dbea6e9d8e5f11324149d06fa3a4efcaaffected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < 9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772affected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < 6260fc85ed1298a71d24a75d01f8b2e56d489a60affected
  • f5a544e3bab78142207e0242d22442db85ba1eff to < 282343cf8a4a5a3603b1cb0e17a7083e4a593b03affected

Linux Linux

Default version status: affected

  • 5.15affected
  • 0 to < 5.15unaffected
  • 5.15.209 to ≤ 5.15.*unaffected
  • 6.1.167 to ≤ 6.1.*unaffected
  • 6.6.130 to ≤ 6.6.*unaffected
  • 6.12.78 to ≤ 6.12.*unaffected
  • 6.18.20 to ≤ 6.18.*unaffected
  • 6.19.10 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References