CVE-2026-74608
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.