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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-68426

CVE-2026-68426: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh7.3

    High [CVE-2026-68426] fix stale skb->prev after async crypto steals a GSO segment

    CVE-2026-68426Source published Source updated

    In the Linux kernel, the following vulnerability has been resolved: xfrm: fix stale skb->prev after async crypto steals a GSO segment skb_gso_segment() leaves the segment list head with ->prev pointing at the last segment, an invariant validate_xmit_skb_list() relies on when it sets its tail pointer (tail = skb->prev). When validate_xmit_xfrm() walks a GSO list and some segments are stolen by async crypto (->xmit() returns -EINPROGRESS), those segments are unlinked from the list but the head ->prev is never updated. If the last segment is the one stolen, the returned head still has ->prev pointing at it, even though it is now owned by the crypto engine and may be freed. validate_xmit_skb_list() later does tail->next = skb, writing through that stale pointer -- a use-after-free. Repoint…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10.0 Extended Update Support
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
    • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
    • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    6 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • kernel-0:6.12.0-211.55.1.el10_2
    • kernel-0:6.12.0-55.108.1.el10_0
    • kernel-rt-0:4.18.0-553.164.1.rt7.505.el8_10
    • kernel-0:4.18.0-553.164.1.el8_10

    16 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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