{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26752", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.169Z", "datePublished": "2024-04-03T17:00:37.340Z", "dateUpdated": "2026-05-23T15:37:36.571Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:37:36.571Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nl2tp: pass correct message length to ip6_append_data\n\nl2tp_ip6_sendmsg needs to avoid accounting for the transport header\ntwice when splicing more data into an already partially-occupied skbuff.\n\nTo manage this, we check whether the skbuff contains data using\nskb_queue_empty when deciding how much data to append using\nip6_append_data.\n\nHowever, the code which performed the calculation was incorrect:\n\n ulen = len + skb_queue_empty(&sk->sk_write_queue) ? transhdrlen : 0;\n\n...due to C operator precedence, this ends up setting ulen to\ntranshdrlen for messages with a non-zero length, which results in\ncorrupted packets on the wire.\n\nAdd parentheses to correct the calculation in line with the original\nintent." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/l2tp/l2tp_ip6.c" ], "versions": [ { "version": "559d697c5d072593d22b3e0bd8b8081108aeaf59", "lessThan": "4c3ce64bc9d36ca9164dd6c77ff144c121011aae", "status": "affected", "versionType": "git" }, { "version": "1fc793d68d50dee4782ef2e808913d5dd880bcc6", "lessThan": "c1d3a84a67db910ce28a871273c992c3d7f9efb5", "status": "affected", "versionType": "git" }, { "version": "96b2e1090397217839fcd6c9b6d8f5d439e705ed", "lessThan": "dcb4d14268595065c85dc5528056713928e17243", "status": "affected", "versionType": "git" }, { "version": "cd1189956393bf850b2e275e37411855d3bd86bb", "lessThan": "0da15a70395182ee8cb75716baf00dddc0bea38d", "status": "affected", "versionType": "git" }, { "version": "f6a7182179c0ed788e3755ee2ed18c888ddcc33f", "lessThan": "13cd1daeea848614e585b2c6ecc11ca9c8ab2500", "status": "affected", "versionType": "git" }, { "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070", "lessThan": "804bd8650a3a2bf3432375f8c97d5049d845ce56", "status": "affected", "versionType": "git" }, { "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070", "lessThan": "83340c66b498e49353530e41542500fc8a4782d6", "status": "affected", "versionType": "git" }, { "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070", "lessThan": "359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79", "status": "affected", "versionType": "git" }, { "version": "7626b9fed53092aa2147978070e610ecb61af844", "status": "affected", "versionType": "git" }, { "version": "fe80658c08e3001c80c5533cd41abfbb0e0e28fd", "status": "affected", "versionType": "git" }, { "version": "4.19.296", "lessThan": "4.19.308", "status": "affected", "versionType": "semver" }, { "version": "5.4.258", "lessThan": "5.4.270", "status": "affected", "versionType": "semver" }, { "version": "5.10.198", "lessThan": "5.10.211", "status": "affected", "versionType": "semver" }, { "version": "5.15.135", "lessThan": "5.15.150", "status": "affected", "versionType": "semver" }, { "version": "6.1.57", "lessThan": "6.1.80", "status": "affected", "versionType": "semver" }, { "version": "4.14.327", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "6.5.7", "lessThan": "6.6", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/l2tp/l2tp_ip6.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.308", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.270", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.211", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.150", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "4.19.296", "versionEndExcluding": "4.19.308" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.258", "versionEndExcluding": "5.4.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.198", "versionEndExcluding": "5.10.211" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.135", "versionEndExcluding": "5.15.150" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.57", "versionEndExcluding": "6.1.80" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.7.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.327" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae" }, { "url": "https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5" }, { "url": "https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243" }, { "url": "https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d" }, { "url": "https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500" }, { "url": "https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56" }, { "url": "https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6" }, { "url": "https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79" } ], "title": "l2tp: pass correct message length to ip6_append_data", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26752", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-04-03T18:05:57.024676Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:48:58.719Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.330Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.2" }