CVE-2026-68343smb: client: validate DFS referral PathConsumed
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4ecce920e13ace16a5ba45efe8909946c28fb2ad before bfebe5110fd135d86d65a0a346e14c106b02028b; from 4ecce920e13ace16a5ba45efe8909946c28fb2ad before 5b439f39f33ec15d319ced3b025e122346fba987; from 4ecce920e13ace16a5ba45efe8909946c28fb2ad before 285bd4a5f3f156aa5869843b47a1b1380b774241; 4ecce920e13ace16a5ba45efe8909946c28fb2ad builds before 2fdd6d196c656b376cc251e1e9ff110b3ed522e1; from 4ecce920e13ace16a5ba45efe8909946c28fb2ad before 9f88a99ed511651b2dc2177d6854b2d1b8322e75; from 4ecce920e13ace16a5ba45efe8909946c28fb2ad before f6f5ee2aa33b350c671721b965251c42cebb962e | CNA record |
References
- https://git.kernel.org/stable/c/bfebe5110fd135d86d65a0a346e14c106b02028b
- https://git.kernel.org/stable/c/5b439f39f33ec15d319ced3b025e122346fba987
- https://git.kernel.org/stable/c/285bd4a5f3f156aa5869843b47a1b1380b774241
- https://git.kernel.org/stable/c/2fdd6d196c656b376cc251e1e9ff110b3ed522e1
- https://git.kernel.org/stable/c/9f88a99ed511651b2dc2177d6854b2d1b8322e75
- https://git.kernel.org/stable/c/f6f5ee2aa33b350c671721b965251c42cebb962e
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.