High 8.4Published Jun 24, 2026

CVE-2026-53091net: pull headers in qdisc_pkt_len_segs_init()

Updated under an hour ago (Oct 28, 2026, 8:50 AM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdisc_pkt_len_segs_init() Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len); qdisc_pkt_len_segs_init() already does a dissection of gso packets. Use pskb_may_pull() instead of skb_header_pointer() to make sure drivers do not have to reimplement this. Some malicious packets could be fed, detect them so that we can drop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
Weakness (CWE): CWE-131
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e876f208af18b074f800656e4d1b99da75b2135f before 5895cfc76924a629c6eaa5e5f049de642860045f; from e876f208af18b074f800656e4d1b99da75b2135f before 7564dc804d8289d2e5c6edb8173754051b71bff4; from e876f208af18b074f800656e4d1b99da75b2135f before 9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a; from e876f208af18b074f800656e4d1b99da75b2135f before 7fb4c19670110f052c04e1ec1d2b953b9f4f57e4	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:6.12.0-211.53.1.el10_2 not affected	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.16 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/5895cfc76924a629c6eaa5e5f049de642860045f
https://git.kernel.org/stable/c/7564dc804d8289d2e5c6edb8173754051b71bff4
https://git.kernel.org/stable/c/9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a	patch
https://git.kernel.org/stable/c/7fb4c19670110f052c04e1ec1d2b953b9f4f57e4	patch
https://access.redhat.com/errata/RHSA-2026:65334
https://access.redhat.com/errata/RHSA-2026:66324
https://access.redhat.com/errata/RHSA-2026:66325
https://access.redhat.com/errata/RHSA-2026:67150
https://access.redhat.com/security/cve/CVE-2026-53091	third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2492270	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.