{ "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": "2026-10-16T19:26:30.519Z" }, "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" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-80609", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-16T19:18:42.466773Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:26:30.519Z" } } ] } }