Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_skbmod: Skip non-Ethernet packets Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2 protocol, which is not always the case. As an example, for CAN devices: $ ip link add dev vcan0 type vcan $ ip link set up vcan0 $ tc qdisc add dev vcan0 root handle 1: htb $ tc filter add dev vcan0 parent 1: protocol ip prio 10 \ matchall action skbmod swap mac Doing the above silently corrupts all the packets. Do not perform skbmod actions for non-Ethernet packets.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 86da71b57383d40993cb90baafb3735cffe5d800 before e4fdca366806f6bab374d1a95e626a10a3854b0c; affected 86da71b57383d40993cb90baafb3735cffe5d800 before a88414fb1117f2fe65fb88e45ba694e1d09d5024; affected 86da71b57383d40993cb90baafb3735cffe5d800 before 071729150be9e1d1b851b70efb6d91ee9269d57b; affected 86da71b57383d40993cb90baafb3735cffe5d800 before 34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d; affected 86da71b57383d40993cb90baafb3735cffe5d800 before 727d6a8b7ef3d25080fad228b2c4a1d4da5999c6 |
| Linux / Linux | affected 4.9; unaffected 0 before 4.9; unaffected 4.19.199 through 4.19.*; unaffected 5.4.136 through 5.4.*; unaffected 5.10.54 through 5.10.*; unaffected 5.13.6 through 5.13.*; unaffected 5.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c
- https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024
- https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b
- https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d
- https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c
- https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024
- https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b
- https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d
- https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6