Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: preserve tc_skb_cb across defragmentation tcf_ct_handle_fragments() calls nf_ct_handle_fragments() without saving and restoring skb->cb. The defrag helper clears IPCB/IP6CB, which aliases the tc_skb_cb/qdisc_skb_cb control buffer. Fragmented traffic through act_ct therefore loses qdisc metadata such as pkt_segs and can trigger WARN_ON_ONCE() in qdisc_pkt_segs() when panic_on_warn is enabled. Save and restore the full tc_skb_cb around nf_ct_handle_fragments(), matching the pattern used by ovs_ct_handle_fragments().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0d76daf2013ce1da20eab5e26bd81d983e1c18fb before fb080b6f54835d5d4d11ce3122800e6f0f6689e6; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before 67d6b00a54446c008f52cf70fc0c2ad0c712f85d; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before 2400c4b05d58834b994500a9eec90a37db44187c; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before 5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before b3d835407846134b0d54637c0281b39bebef831d; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before f7f45ceb855d9ba1cba594fb3f383255f7013fad; affected ec624fe740b416fb68d536b37fb8eef46f90b5c2 before 9092e15defbe6c7bc241c306093ca9d358a578e7; affected 5.15.13 before 5.15.217 |
| Linux / Linux | affected 5.16; unaffected 0 before 5.16; unaffected 5.15.217 through 5.15.*; unaffected 6.1.184 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/fb080b6f54835d5d4d11ce3122800e6f0f6689e6
- https://git.kernel.org/stable/c/67d6b00a54446c008f52cf70fc0c2ad0c712f85d
- https://git.kernel.org/stable/c/2400c4b05d58834b994500a9eec90a37db44187c
- https://git.kernel.org/stable/c/5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac
- https://git.kernel.org/stable/c/b3d835407846134b0d54637c0281b39bebef831d
- https://git.kernel.org/stable/c/f7f45ceb855d9ba1cba594fb3f383255f7013fad
- https://git.kernel.org/stable/c/9092e15defbe6c7bc241c306093ca9d358a578e7
ADP enrichment
No English description supplied.
No references supplied.