CVE-2024-26739High· 7.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.3%
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.
debian_linux = 11.0linux_kernel >= 4.19, < 5.10.238linux_kernel >= 5.11, < 5.15.182linux_kernel >= 5.16, < 6.1.136linux_kernel >= 6.2, < 6.6.19linux_kernel >= 6.7, < 6.7.7linux_kernel = 6.8Upgrade past the affected range:
linux_kernel 6.7.7Connected by shared product, vendor, weakness, or advisory.
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