Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linuxcbc53148cc0946b72d62a3c53870cb22ce4ec284 – < 64d7584e62ac8cdc750455c5fdc6008fc2de4f0664d7584e62ac8cdc750455c5fdc6008fc2de4f06CNA
Linuxcff97d683a083b862a8bb24309e0f4d2d928128a – < c292d4686f717c03e5022fc4ae7c782f39a94915c292d4686f717c03e5022fc4ae7c782f39a94915CNA
Linux6aac002bcfd554aff6d3ebb55e1660d078d70ab0 – < 47dfac48bce7198ad4f1a388fc8c9491f878ac3b47dfac48bce7198ad4f1a388fc8c9491f878ac3bCNA
Linux6aac002bcfd554aff6d3ebb55e1660d078d70ab0 – < 1ffacbadc14530e55b8d86f7b917524f6a0fb8911ffacbadc14530e55b8d86f7b917524f6a0fb891CNA
Linux6aac002bcfd554aff6d3ebb55e1660d078d70ab0 – < 1305eadc6a7d78a8d0a52eee29ddd2d9e8a278051305eadc6a7d78a8d0a52eee29ddd2d9e8a27805CNA
Linux6aac002bcfd554aff6d3ebb55e1660d078d70ab0 – < 4986410316b1ae0e63c6ce418e4eb196723626e74986410316b1ae0e63c6ce418e4eb196723626e7CNA
Linux22a6c5b3425f327e7f4c3606a72277dce82c7d83–CNA
Linux6.1.78 – < 6.1.1836.1.183CNA
Linux6.6.17 – < 6.6.1526.6.152CNA
Linux6.7.5 – < 6.86.8CNA
Linux6.86.1.183CNA
by Kastro