{"id":"CVE-2026-80609","state":"PUBLISHED","title":"qede: fix out-of-bounds check for cqe->len_list[]","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: fix out-of-bounds check for cqe->len_list[]\n\nMove index check before element access.","publishedAt":"2026-08-28T06:48:32.751Z","updatedAt":"2026-10-16T19:26:30.519Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ecbb12caf399d7cf364b7553ed5aebeaa2f255bc","status":"affected","lessThan":"6d203bdd227fca1787f8a80cf84b990936633c5a","versionType":"git"},{"version":"a778912b4a53587ea07d85526d152f85d109cbfe","status":"affected","lessThan":"bd3a6a083b408e96437dbd86ff543ba9ec3a788b","versionType":"git"},{"version":"f0923011c1261b33a2ac1de349256d39cb750dd0","status":"affected","lessThan":"e30af53dca803893a29eb3bbe0539752ba435410","versionType":"git"},{"version":"917a9d02182ac8b4f25eb47dc02f3ec679608c24","status":"affected","lessThan":"1aacefd074b5dcc99b8dbcd73e1c963ed5010110","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"6d46ab395803f162cdc50e8d346e5f1a4e766771","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"f9ba47fce5932c15891c89c60e76dfaca919cb8d","versionType":"git"},{"version":"e441db07f208184e0466abf44b389a81d70c340e","status":"affected","versionType":"git"},{"version":"5.15.197","status":"affected","lessThan":"5.15.212","versionType":"semver"},{"version":"6.1.159","status":"affected","lessThan":"6.1.178","versionType":"semver"},{"version":"6.6.118","status":"affected","lessThan":"6.6.145","versionType":"semver"},{"version":"6.12.60","status":"affected","lessThan":"6.12.97","versionType":"semver"},{"version":"6.17.10","status":"affected","lessThan":"6.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"]}],"references":["https://git.kernel.org/stable/c/6d203bdd227fca1787f8a80cf84b990936633c5a","https://git.kernel.org/stable/c/bd3a6a083b408e96437dbd86ff543ba9ec3a788b","https://git.kernel.org/stable/c/e30af53dca803893a29eb3bbe0539752ba435410","https://git.kernel.org/stable/c/1aacefd074b5dcc99b8dbcd73e1c963ed5010110","https://git.kernel.org/stable/c/b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd","https://git.kernel.org/stable/c/6d46ab395803f162cdc50e8d346e5f1a4e766771","https://git.kernel.org/stable/c/f9ba47fce5932c15891c89c60e76dfaca919cb8d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80609.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80609","state":"PUBLISHED","datePublished":"2026-08-28T06:48:32.751Z","dateUpdated":"2026-10-16T19:26:30.519Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.773Z"},"containers":{"cna":{"title":"qede: fix out-of-bounds check for cqe->len_list[]","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: fix out-of-bounds check for cqe->len_list[]\n\nMove index check before element access."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ecbb12caf399d7cf364b7553ed5aebeaa2f255bc","status":"affected","lessThan":"6d203bdd227fca1787f8a80cf84b990936633c5a","versionType":"git"},{"version":"a778912b4a53587ea07d85526d152f85d109cbfe","status":"affected","lessThan":"bd3a6a083b408e96437dbd86ff543ba9ec3a788b","versionType":"git"},{"version":"f0923011c1261b33a2ac1de349256d39cb750dd0","status":"affected","lessThan":"e30af53dca803893a29eb3bbe0539752ba435410","versionType":"git"},{"version":"917a9d02182ac8b4f25eb47dc02f3ec679608c24","status":"affected","lessThan":"1aacefd074b5dcc99b8dbcd73e1c963ed5010110","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"6d46ab395803f162cdc50e8d346e5f1a4e766771","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","status":"affected","lessThan":"f9ba47fce5932c15891c89c60e76dfaca919cb8d","versionType":"git"},{"version":"e441db07f208184e0466abf44b389a81d70c340e","status":"affected","versionType":"git"},{"version":"5.15.197","status":"affected","lessThan":"5.15.212","versionType":"semver"},{"version":"6.1.159","status":"affected","lessThan":"6.1.178","versionType":"semver"},{"version":"6.6.118","status":"affected","lessThan":"6.6.145","versionType":"semver"},{"version":"6.12.60","status":"affected","lessThan":"6.12.97","versionType":"semver"},{"version":"6.17.10","status":"affected","lessThan":"6.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6d203bdd227fca1787f8a80cf84b990936633c5a"},{"url":"https://git.kernel.org/stable/c/bd3a6a083b408e96437dbd86ff543ba9ec3a788b"},{"url":"https://git.kernel.org/stable/c/e30af53dca803893a29eb3bbe0539752ba435410"},{"url":"https://git.kernel.org/stable/c/1aacefd074b5dcc99b8dbcd73e1c963ed5010110"},{"url":"https://git.kernel.org/stable/c/b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd"},{"url":"https://git.kernel.org/stable/c/6d46ab395803f162cdc50e8d346e5f1a4e766771"},{"url":"https://git.kernel.org/stable/c/f9ba47fce5932c15891c89c60e76dfaca919cb8d"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"},"scenarios":[{"lang":"en","value":"AV:N - The bug is in qede TPA completion handling on the NAPI RX fastpath; remote TCP traffic to a Marvell/QLogic FastLinQ NIC causes firmware to post TPA CQEs that are parsed in qede_poll()->qede_rx_int()->qede_rx_process_tpa_cqe()->qede_tpa_cont()/qede_tpa_end().\nAC:L - An attacker can repeatedly send high-rate crafted TCP bursts to maximize TPA aggregation BD counts so all len_list[] slots are non-zero, deterministically hitting the misordered bounds check without races, special memory layout, or victim-specific state.\nPR:N - Only the ability to send Ethernet/TCP packets to a listening host with a qede interface is required; RX and TPA CQE processing occur in softirq before any authentication, capability checks, or local account access.\nUI:N - No victim action is needed beyond normal network operation; packet reception, interrupt handling, and NAPI polling automatically process attacker-supplied frames and completion descriptors.\nS:U - The out-of-bounds read and resulting skb/RX-ring corruption stay within the host kernel security boundary and do not cross VM, container, IOMMU, or sandbox isolation by themselves.\nC:H - The loop reads past len_list[] into adjacent completion-descriptor memory before the bound check, and the same malformed CQE drives qede_fill_frag_skb() with attacker-influenced lengths that can leak uninitialized RX-ring/page data up the network stack.\nI:H - Extra qede_fill_frag_skb() iterations advance frag_id without MAX_SKB_FRAGS limits and consume RX BDs using firmware-supplied lengths, enabling controllable skb shared-info and RX-ring corruption exploitable for arbitrary kernel writes.\nA:H - Corrupted skb fragment metadata and desynchronized RX BD consumption reliably trigger kernel oops/panic or wedged RX processing in softirq, and the condition is remotely repeatable for sustained denial of 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