Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: fix entry leak in bridge verdict error path nfqnl_recv_verdict() calls find_dequeue_entry() to remove the queue entry from the queue data structures, taking ownership of the entry. For PF_BRIDGE packets, it then calls nfqa_parse_bridge() to parse VLAN attributes. If nfqa_parse_bridge() returns an error (e.g. NFQA_VLAN present but NFQA_VLAN_TCI missing), the function returns immediately without freeing the dequeued entry or its sk_buff. This leaks the nf_queue_entry, its associated sk_buff, and all held references (net_device refcounts, struct net refcount). Repeated triggering exhausts kernel memory. Fix this by dropping the entry via nfqnl_reinject() with NF_DROP verdict on the error path, consistent with other error handling in this file.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before a907bea273b60d3e604ec4e8e1f6c49954805794; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before 0b18d1b834ab5a5009be70b530f978d7989e445b; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before b38d2b4603fd3dda24eb8b3dd81c18a0930be97b; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before 47b1c5d1b0944aa88299f55a846fabaefc756982; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before cf4a4df38d1747e06fc54f9879bd7a6f4178032f; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before 9853d94b82d303fc4ac37d592a23a154096ecd41; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before 208669df703a25a601f45822b10c413f258bf275; affected 8d45ff22f1b43249f0cf1baafe0262ca10d1666e before f1ba83755d81c6fc66ac7acd723d238f974091e9 |
| Linux / Linux | affected 4.7; unaffected 0 before 4.7; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.78 through 6.12.*; unaffected 6.18.19 through 6.18.*; unaffected 6.19.9 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a907bea273b60d3e604ec4e8e1f6c49954805794
- https://git.kernel.org/stable/c/0b18d1b834ab5a5009be70b530f978d7989e445b
- https://git.kernel.org/stable/c/b38d2b4603fd3dda24eb8b3dd81c18a0930be97b
- https://git.kernel.org/stable/c/47b1c5d1b0944aa88299f55a846fabaefc756982
- https://git.kernel.org/stable/c/cf4a4df38d1747e06fc54f9879bd7a6f4178032f
- https://git.kernel.org/stable/c/9853d94b82d303fc4ac37d592a23a154096ecd41
- https://git.kernel.org/stable/c/208669df703a25a601f45822b10c413f258bf275
- https://git.kernel.org/stable/c/f1ba83755d81c6fc66ac7acd723d238f974091e9