CVE-2026-53091
- Source
- https://cve.org/CVERecord?id=CVE-2026-53091
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53091.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53091
- Downstream
- Published
- 2026-06-24T16:30:30Z
- Modified
- 2026-08-12T03:51:41Z
- Severity
-
- 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H CVSS Calculator
- Summary
- net: pull headers in qdisc_pkt_len_segs_init()
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53091.json" }- References
-
- https://git.kernel.org/stable/c/7fb4c19670110f052c04e1ec1d2b953b9f4f57e4
- https://git.kernel.org/stable/c/9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53091.json
- https://access.redhat.com/security/cve/CVE-2026-53091
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53091.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53091
- https://bugzilla.redhat.com/show_bug.cgi?id=2492270
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git