Description
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_mirred: don't override retval if we already lost the skb
If we're redirecting the skb, and haven't called tcf_mirred_forward(), yet, we need to tell the core to drop the skb by setting the retcode to SHOT. If we have called tcf_mirred_forward(), however, the skb is out of our hands and returning SHOT will lead to UaF.
Move the retval override to the error path which actually need it.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < 0117fe0a4615a7c8d30d6ebcbf87332fbe63e6fd; >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < 9d3ef89b6a5e9f2e940de2cef3d543be0be8dec5; >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < e873e8f7d03a2ee5b77fb1a305c782fed98e2754; >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < 28cdbbd38a4413b8eff53399b3f872fd4e80db9d; >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < f4e294bbdca8ac8757db436fc82214f3882fc7e7; >= e5cf1baf92cb785b90390db1c624948e70c8b8bd, < 166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210 |
| Linux | Linux | 4.19 |
References
- https://git.kernel.org/stable/c/0117fe0a4615a7c8d30d6ebcbf87332fbe63e6fdPatch
- https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210Patch
- https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9dPatch
- https://git.kernel.org/stable/c/9d3ef89b6a5e9f2e940de2cef3d543be0be8dec5Patch
- https://git.kernel.org/stable/c/e873e8f7d03a2ee5b77fb1a305c782fed98e2754Patch
- https://git.kernel.org/stable/c/f4e294bbdca8ac8757db436fc82214f3882fc7e7Patch
- https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210Patch
- https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9dPatch
- https://git.kernel.org/stable/c/f4e294bbdca8ac8757db436fc82214f3882fc7e7Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
Timeline
- Published
- Apr 3, 2024
- Last modified
- Aug 4, 2026
- NVD status
- Modified