PoC Index85,079 CVEs with PoCs

CVE-2026-46331

net/sched: fix pedit partial COW leading to page cache corruption

MEDIUM 6.7EPSS 0.6%

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd. Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.

Affected
Linux
CVSS v3.1 CNA
6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1 CNA
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.58% chance of exploitation in the next 30 days, 47th percentile
Published
2026-06-16
Updated
2026-10-15

Proof-of-concept exploits (11)

Security advisories

References

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