Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: packet: use consistent hard_header_len in TX_RING send path tpacket_snd() reads dev->hard_header_len independently for skb allocation and header construction in tpacket_fill_skb(). Concurrent netdevice reconfiguration can therefore make the reserved headroom smaller than the amount later pushed, or make copylen - hard_header_len negative. Snapshot hard_header_len once before processing ring frames and use it for the frame limit, headroom allocation, copy length, and skb construction. Pass the snapshot to tpacket_fill_skb(). The separate SOCK_DGRAM consistency problem between hard_header_len and header_ops->create is not addressed here.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before 9c7e8ff48c377bef18c3d178748aea0575b69ede; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before 2a73b2c37ee3060a880b53cd24783d93fc7be5f8; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before e79f59a8527a49078cfaf8fe8fb5fcefc20c76d2; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before d85d2fd54e901637c81d847811e03c662aee13cd; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before 016763e829cac37b3234eace86fd0a4c560de4a7; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before 27e068d1b35dbec10a3cf268887c94407be4badc; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before d48ea5c9c4c34dc0df621f0e39ed3a16b644621a; affected 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 before 21b5953e7494c16a42e6cd8cf110e18d13ae4a6b |
| Linux / Linux | affected 2.6.31; unaffected 0 before 2.6.31; unaffected 5.10.267 through 5.10.*; unaffected 5.15.218 through 5.15.*; unaffected 6.1.185 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9c7e8ff48c377bef18c3d178748aea0575b69ede
- https://git.kernel.org/stable/c/2a73b2c37ee3060a880b53cd24783d93fc7be5f8
- https://git.kernel.org/stable/c/e79f59a8527a49078cfaf8fe8fb5fcefc20c76d2
- https://git.kernel.org/stable/c/d85d2fd54e901637c81d847811e03c662aee13cd
- https://git.kernel.org/stable/c/016763e829cac37b3234eace86fd0a4c560de4a7
- https://git.kernel.org/stable/c/27e068d1b35dbec10a3cf268887c94407be4badc
- https://git.kernel.org/stable/c/d48ea5c9c4c34dc0df621f0e39ed3a16b644621a
- https://git.kernel.org/stable/c/21b5953e7494c16a42e6cd8cf110e18d13ae4a6b
ADP enrichment
No English description supplied.
No references supplied.