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CVE PROGRAM SOURCE RECORD8.4 High

CVE-2026-53091

net: pull headers in qdisc_pkt_len_segs_init()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • e876f208af18b074f800656e4d1b99da75b2135f to < 5895cfc76924a629c6eaa5e5f049de642860045faffected
  • e876f208af18b074f800656e4d1b99da75b2135f to < 7564dc804d8289d2e5c6edb8173754051b71bff4affected
  • e876f208af18b074f800656e4d1b99da75b2135f to < 9d4f5c68f5ad4ab425f3ce1500c97c9f9743999aaffected
  • e876f208af18b074f800656e4d1b99da75b2135f to < 7fb4c19670110f052c04e1ec1d2b953b9f4f57e4affected

Linux Linux

Default version status: affected

  • 3.16affected
  • 0 to < 3.16unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.114 to ≤ 6.12.*unaffected
  • 7.0.10 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References