{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80609","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.773Z","datePublished":"2026-08-28T06:48:32.751Z","dateUpdated":"2026-08-29T06:21:19.318Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-29T06:21:19.318Z"},"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."}],"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 service."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"],"versions":[{"version":"ecbb12caf399d7cf364b7553ed5aebeaa2f255bc","lessThan":"6d203bdd227fca1787f8a80cf84b990936633c5a","status":"affected","versionType":"git"},{"version":"a778912b4a53587ea07d85526d152f85d109cbfe","lessThan":"bd3a6a083b408e96437dbd86ff543ba9ec3a788b","status":"affected","versionType":"git"},{"version":"f0923011c1261b33a2ac1de349256d39cb750dd0","lessThan":"e30af53dca803893a29eb3bbe0539752ba435410","status":"affected","versionType":"git"},{"version":"917a9d02182ac8b4f25eb47dc02f3ec679608c24","lessThan":"1aacefd074b5dcc99b8dbcd73e1c963ed5010110","status":"affected","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","lessThan":"b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd","status":"affected","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","lessThan":"6d46ab395803f162cdc50e8d346e5f1a4e766771","status":"affected","versionType":"git"},{"version":"896f1a2493b59beb2b5ccdf990503dbb16cb2256","lessThan":"f9ba47fce5932c15891c89c60e76dfaca919cb8d","status":"affected","versionType":"git"},{"version":"e441db07f208184e0466abf44b389a81d70c340e","status":"affected","versionType":"git"},{"version":"5.15.197","lessThan":"5.15.212","status":"affected","versionType":"semver"},{"version":"6.1.159","lessThan":"6.1.178","status":"affected","versionType":"semver"},{"version":"6.6.118","lessThan":"6.6.145","status":"affected","versionType":"semver"},{"version":"6.12.60","lessThan":"6.12.97","status":"affected","versionType":"semver"},{"version":"6.17.10","lessThan":"6.18","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/qlogic/qede/qede_fp.c"],"versions":[{"version":"6.18","status":"affected"},{"version":"0","lessThan":"6.18","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.197","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.159","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.118","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.60","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17.10"}]}]}],"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"}],"title":"qede: fix out-of-bounds check for cqe->len_list[]","x_generator":{"engine":"bippy-1.2.0"}}}}