{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68301", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.293Z", "datePublished": "2025-12-16T15:06:19.688Z", "dateUpdated": "2026-08-05T12:10:42.337Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:42.337Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: fix fragment overflow handling in RX path\n\nThe atlantic driver can receive packets with more than MAX_SKB_FRAGS (17)\nfragments when handling large multi-descriptor packets. This causes an\nout-of-bounds write in skb_add_rx_frag_netmem() leading to kernel panic.\n\nThe issue occurs because the driver doesn't check the total number of\nfragments before calling skb_add_rx_frag(). When a packet requires more\nthan MAX_SKB_FRAGS fragments, the fragment index exceeds the array bounds.\n\nFix by assuming there will be an extra frag if buff->len > AQ_CFG_RX_HDR_SIZE,\nthen all fragments are accounted for. And reusing the existing check to\nprevent the overflow earlier in the code path.\n\nThis crash occurred in production with an Aquantia AQC113 10G NIC.\n\nStack trace from production environment:\n```\nRIP: 0010:skb_add_rx_frag_netmem+0x29/0xd0\nCode: 90 f3 0f 1e fa 0f 1f 44 00 00 48 89 f8 41 89\nca 48 89 d7 48 63 ce 8b 90 c0 00 00 00 48 c1 e1 04 48 01 ca 48 03 90\nc8 00 00 00 <48> 89 7a 30 44 89 52 3c 44 89 42 38 40 f6 c7 01 75 74 48\n89 fa 83\nRSP: 0018:ffffa9bec02a8d50 EFLAGS: 00010287\nRAX: ffff925b22e80a00 RBX: ffff925ad38d2700 RCX:\nfffffffe0a0c8000\nRDX: ffff9258ea95bac0 RSI: ffff925ae0a0c800 RDI:\n0000000000037a40\nRBP: 0000000000000024 R08: 0000000000000000 R09:\n0000000000000021\nR10: 0000000000000848 R11: 0000000000000000 R12:\nffffa9bec02a8e24\nR13: ffff925ad8615570 R14: 0000000000000000 R15:\nffff925b22e80a00\nFS: 0000000000000000(0000)\nGS:ffff925e47880000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: ffff9258ea95baf0 CR3: 0000000166022004 CR4:\n0000000000f72ef0\nPKRU: 55555554\nCall Trace:\n\naq_ring_rx_clean+0x175/0xe60 [atlantic]\n? aq_ring_rx_clean+0x14d/0xe60 [atlantic]\n? aq_ring_tx_clean+0xdf/0x190 [atlantic]\n? kmem_cache_free+0x348/0x450\n? aq_vec_poll+0x81/0x1d0 [atlantic]\n? __napi_poll+0x28/0x1c0\n? net_rx_action+0x337/0x420\n```\n\nChanges in v4:\n- Add Fixes: tag to satisfy patch validation requirements.\n\nChanges in v3:\n- Fix by assuming there will be an extra frag if buff->len > AQ_CFG_RX_HDR_SIZE,\n then all fragments are accounted for." } ], "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 - Routed network traffic can reach the vulnerable RX path, and a remote peer can supply a sufficiently large TCP flow for the NIC's receive-side coalescing without local access.\nAC:L - The attacker controls the packet volume, ordering, and repetition needed to produce a large descriptor chain; default-enabled LRO performs the aggregation without an uncontrollable race.\nPR:N - Descriptor processing occurs in the NIC driver before socket or application authentication, with no capability or privilege check.\nUI:N - Receiving and coalescing the attacker's packets automatically invokes the vulnerable NAPI path without victim action.\nS:U - The overwrite compromises memory belonging to the same host kernel security authority and does not inherently cross a VM, IOMMU, or other scope boundary.\nC:H - The out-of-bounds fragment descriptor overwrites neighboring heap or allocator state with a kernel page reference and associated fields, which can potentially be developed into kernel memory disclosure.\nI:H - The driver performs a 16-byte heap out-of-bounds write beyond the final skb fragment; remotely driven heap grooming can potentially convert this corruption into broader writes or control-flow hijacking.\nA:H - The corruption caused an observed production kernel panic and can be triggered repeatedly to crash or destabilize an affected system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/aquantia/atlantic/aq_ring.c" ], "versions": [ { "version": "cd66ab20a8f84474564a68fffffd37d998f6c340", "lessThan": "34147477eeab24077fcfe9649e282849347d760c", "status": "affected", "versionType": "git" }, { "version": "948ddbdc56636773401f2cb9c7a932eb9c43ccfd", "lessThan": "b0c4d5135b04ea100988e2458c98f2d8564cda16", "status": "affected", "versionType": "git" }, { "version": "6aecbba12b5c90b26dc062af3b9de8c4b3a2f19f", "lessThan": "5d6051ea1b0417ae2f06a8440d22e48fbc8f8997", "status": "affected", "versionType": "git" }, { "version": "6aecbba12b5c90b26dc062af3b9de8c4b3a2f19f", "lessThan": "3be37c3c96b16462394fcb8e15e757c691377038", "status": "affected", "versionType": "git" }, { "version": "6aecbba12b5c90b26dc062af3b9de8c4b3a2f19f", "lessThan": "3fd2105e1b7e041cc24be151c9a31a14d5fc50ab", "status": "affected", "versionType": "git" }, { "version": "6aecbba12b5c90b26dc062af3b9de8c4b3a2f19f", "lessThan": "64e47cd1fd631a21bf5a630cebefec6c8fc381cd", "status": "affected", "versionType": "git" }, { "version": "6aecbba12b5c90b26dc062af3b9de8c4b3a2f19f", "lessThan": "5ffcb7b890f61541201461580bb6622ace405aec", "status": "affected", "versionType": "git" }, { "version": "dd4fb02847e737cc38ca75e708b1a836fba45faf", "status": "affected", "versionType": "git" }, { "version": "5.10.118", "lessThan": "5.10.247", "status": "affected", "versionType": "semver" }, { "version": "5.15.42", "lessThan": "5.15.197", "status": "affected", "versionType": "semver" }, { "version": "5.17.10", "lessThan": "5.18", "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/aquantia/atlantic/aq_ring.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.247", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.119", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.61", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.11", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "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": "5.10.118", "versionEndExcluding": "5.10.247" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.42", "versionEndExcluding": "5.15.197" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.1.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.119" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.17.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/34147477eeab24077fcfe9649e282849347d760c" }, { "url": "https://git.kernel.org/stable/c/b0c4d5135b04ea100988e2458c98f2d8564cda16" }, { "url": "https://git.kernel.org/stable/c/5d6051ea1b0417ae2f06a8440d22e48fbc8f8997" }, { "url": "https://git.kernel.org/stable/c/3be37c3c96b16462394fcb8e15e757c691377038" }, { "url": "https://git.kernel.org/stable/c/3fd2105e1b7e041cc24be151c9a31a14d5fc50ab" }, { "url": "https://git.kernel.org/stable/c/64e47cd1fd631a21bf5a630cebefec6c8fc381cd" }, { "url": "https://git.kernel.org/stable/c/5ffcb7b890f61541201461580bb6622ace405aec" } ], "title": "net: atlantic: fix fragment overflow handling in RX path", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-16T19:13:08.635371Z", "id": "CVE-2025-68301", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-16T19:13:17.778Z" } } ] } }