CVE-2026-53091net: pull headers in qdisc_pkt_len_segs_init()
Updated under an hour ago ()
Does this affect you?
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.
Do this next
Free account, 1 product
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 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 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
- https://git.kernel.org/stable/c/9d4f5c68f5ad4ab425f3ce1500c97c9f9743999apatch
- https://git.kernel.org/stable/c/7fb4c19670110f052c04e1ec1d2b953b9f4f57e4patch
- 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-2026-53091third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492270third-party-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53091.jsonthird-party-advisory
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.