OESA-2026-2870

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2870
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-2870.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-2870
Upstream
Published
2026-07-06T11:11:46Z
Modified
2026-08-18T01:21:13Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
kernel security update
Details

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)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:20.03-LTS-SP4 / kernel

Package

Name
kernel
Purl
pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.19.90-2606.5.0.0378.oe2003sp4

Ecosystem specific 

{
    "aarch64": [
        "bpftool-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "bpftool-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-debugsource-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-devel-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-source-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-tools-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-tools-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "kernel-tools-devel-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "perf-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "python2-perf-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "python2-perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "python3-perf-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm",
        "python3-perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.aarch64.rpm"
    ],
    "src": [
        "kernel-4.19.90-2606.5.0.0378.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "bpftool-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "bpftool-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-debugsource-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-devel-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-source-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-tools-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-tools-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "kernel-tools-devel-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "perf-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "python2-perf-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "python2-perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "python3-perf-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm",
        "python3-perf-debuginfo-4.19.90-2606.5.0.0378.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-2870.json"