Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 11.0 |
| Linux | Linux Kernel | >= 4.19, < 5.10.238 |
Related Weaknesses (CWE)
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 ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2024-26739?
CVE-2024-26739 is a vulnerability with a CVSS score of 7.8 (HIGH). 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_mirre...
How severe is CVE-2024-26739?
CVE-2024-26739 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-26739?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Linux Linux Kernel.