by Kastro CVE-2026-68343
Linux Linux — smb: client: validate DFS referral PathConsumed
Description · from the CVE record
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
ProductAffectedFixed inSource
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < bfebe5110fd135d86d65a0a346e14c106b02028bbfebe5110fd135d86d65a0a346e14c106b02028bCNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 5b439f39f33ec15d319ced3b025e122346fba9875b439f39f33ec15d319ced3b025e122346fba987CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 285bd4a5f3f156aa5869843b47a1b1380b774241285bd4a5f3f156aa5869843b47a1b1380b774241CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 2fdd6d196c656b376cc251e1e9ff110b3ed522e12fdd6d196c656b376cc251e1e9ff110b3ed522e1CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 9f88a99ed511651b2dc2177d6854b2d1b8322e759f88a99ed511651b2dc2177d6854b2d1b8322e75CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < f6f5ee2aa33b350c671721b965251c42cebb962ef6f5ee2aa33b350c671721b965251c42cebb962eCNA
Linux4.11–CNA
Scores by source
Linux (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial