vulnerability
Ubuntu: (CVE-2024-26739): linux-raspi-realtime vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Apr 3, 2024 | Feb 11, 2025 | May 22, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Apr 3, 2024
Added
Feb 11, 2025
Modified
May 22, 2025
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.
Solution
ubuntu-upgrade-linux-raspi-realtime
References
- CVE-2024-26739
- https://attackerkb.com/topics/CVE-2024-26739
- URL-https://git.kernel.org/linus/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210
- URL-https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210
- URL-https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9d
- URL-https://git.kernel.org/stable/c/f4e294bbdca8ac8757db436fc82214f3882fc7e7
- URL-https://www.cve.org/CVERecord?id=CVE-2024-26739
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