{"id":"AZL-95039","summary":"CVE-2026-68426 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix stale skb-\u003eprev after async crypto steals a GSO segment\n\nskb_gso_segment() leaves the segment list head with -\u003eprev pointing at\nthe last segment, an invariant validate_xmit_skb_list() relies on when\nit sets its tail pointer (tail = skb-\u003eprev).\n\nWhen validate_xmit_xfrm() walks a GSO list and some segments are stolen\nby async crypto (-\u003exmit() returns -EINPROGRESS), those segments are\nunlinked from the list but the head -\u003eprev is never updated.  If the\nlast segment is the one stolen, the returned head still has -\u003eprev\npointing at it, even though it is now owned by the crypto engine and may\nbe freed.  validate_xmit_skb_list() later does tail-\u003enext = skb, writing\nthrough that stale pointer -- a use-after-free.\n\nRepoint skb-\u003eprev at the last retained segment before returning.","modified":"2026-08-30T05:26:50Z","published":"2026-08-10T13:20:36Z","upstream":["CVE-2026-68426"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68426"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-95039.json"}}],"schema_version":"1.9.0"}