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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-68343

smb: client: validate DFS referral PathConsumed

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate DFS referral PathConsumed parse_dfs_referrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a PathConsumed value that is later used for DFS path parsing. If a malformed response provides a PathConsumed value larger than the search name, later DFS parsing can advance beyond the end of the path. Validate PathConsumed against the search name length before storing it in the parsed referral.

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

  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < bfebe5110fd135d86d65a0a346e14c106b02028baffected
  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < 5b439f39f33ec15d319ced3b025e122346fba987affected
  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < 285bd4a5f3f156aa5869843b47a1b1380b774241affected
  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < 2fdd6d196c656b376cc251e1e9ff110b3ed522e1affected
  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < 9f88a99ed511651b2dc2177d6854b2d1b8322e75affected
  • 4ecce920e13ace16a5ba45efe8909946c28fb2ad to < f6f5ee2aa33b350c671721b965251c42cebb962eaffected

Linux Linux

Default version status: affected

  • 4.11affected
  • 0 to < 4.11unaffected
  • 6.1.183 to ≤ 6.1.*unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References