🛡️ OESA-2026-2870 — kernel

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

kernel security update

The Linux Kernel, the operating system core itself.

Security Fix(es):

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.(CVE-2026-46331)

Affected software

OESA-2026-2870 is recorded against 1 package.

  • kernel (fixed in 4.19.90-2606.5.0.0378.oe2003sp4)

Timeline and source

Published on 6 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-06
Updated 2026-08-12
Modified 2026-07-06
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 4.19.90-2606.5.0.0378.oe2003sp4

Similar Threats

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