Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: Fix use-after-free in cifs_try_adding_channels()
cifs_try_adding_channels() takes a temporary reference to an interface before dropping iface_lock. If cifs_ses_add_channel() fails, it drops that reference and then increments iface->weight_fulfilled.
A concurrent interface list refresh can remove the list reference while channel creation is in progress. In that case, the failure-path kref_put() releases the last reference and frees iface. Updating weight_fulfilled afterward then accesses freed memory.
Increment weight_fulfilled before dropping the temporary reference, keeping iface alive for the final access.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= cbc53148cc0946b72d62a3c53870cb22ce4ec284, < 64d7584e62ac8cdc750455c5fdc6008fc2de4f06; >= cff97d683a083b862a8bb24309e0f4d2d928128a, < c292d4686f717c03e5022fc4ae7c782f39a94915; >= 6aac002bcfd554aff6d3ebb55e1660d078d70ab0, < 47dfac48bce7198ad4f1a388fc8c9491f878ac3b; >= 6aac002bcfd554aff6d3ebb55e1660d078d70ab0, < 1ffacbadc14530e55b8d86f7b917524f6a0fb891; >= 6aac002bcfd554aff6d3ebb55e1660d078d70ab0, < 1305eadc6a7d78a8d0a52eee29ddd2d9e8a27805; >= 6aac002bcfd554aff6d3ebb55e1660d078d70ab0, < 4986410316b1ae0e63c6ce418e4eb196723626e7; 22a6c5b3425f327e7f4c3606a72277dce82c7d83; >= 6.1.78, < 6.1.183; >= 6.6.17, < 6.6.152; >= 6.7.5, < 6.8 |
| Linux | Linux | 6.8 |
References
- https://git.kernel.org/stable/c/1305eadc6a7d78a8d0a52eee29ddd2d9e8a27805
- https://git.kernel.org/stable/c/1ffacbadc14530e55b8d86f7b917524f6a0fb891
- https://git.kernel.org/stable/c/47dfac48bce7198ad4f1a388fc8c9491f878ac3b
- https://git.kernel.org/stable/c/4986410316b1ae0e63c6ce418e4eb196723626e7
- https://git.kernel.org/stable/c/64d7584e62ac8cdc750455c5fdc6008fc2de4f06
- https://git.kernel.org/stable/c/c292d4686f717c03e5022fc4ae7c782f39a94915
Timeline
- Published
- Aug 22, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Received