{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52887", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:35:00.782Z", "datePublished": "2024-07-29T15:52:27.615Z", "dateUpdated": "2026-08-05T09:11:52.764Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:52.764Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new\n\nThis patch enhances error handling in scenarios with RTS (Request to\nSend) messages arriving closely. It replaces the less informative WARN_ON_ONCE\nbacktraces with a new error handling method. This provides clearer error\nmessages and allows for the early termination of problematic sessions.\nPreviously, sessions were only released at the end of j1939_xtp_rx_rts().\n\nPotentially this could be reproduced with something like:\ntestj1939 -r vcan0:0x80 &\nwhile true; do\n\t# send first RTS\n\tcansend vcan0 18EC8090#1014000303002301;\n\t# send second RTS\n\tcansend vcan0 18EC8090#1014000303002301;\n\t# send abort\n\tcansend vcan0 18EC8090#ff00000000002301;\ndone" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable code is reached by received SAE J1939 TP.CM RTS frames via can_rcv → j1939_can_recv → j1939_tp_recv → j1939_xtp_rx_rts → j1939_xtp_rx_rts_session_new. An unauthenticated CAN/J1939 peer can trigger it without local code execution on the target, consistent with other packet-triggered j1939 scores.\nAC:L - The attacker reliably triggers the bug by sending tightly spaced duplicate RTS (and abort) frames, as in the documented cansend reproducer; the attacker fully controls packet contents and timing.\nPR:N - J1939/CAN receive processing has no authentication gate; once a legitimate J1939 socket is bound on the victim (normal for J1939 deployments), an unauthenticated bus peer can inject the crafted RTS sequence.\nUI:N - No user action is required beyond the target already running the J1939 stack with a bound socket; the attacker only needs to transmit frames.\nS:U - Impact is confined to kernel J1939 session handling within the same kernel security authority and does not cross VM, IOMMU, or sandbox boundaries.\nC:N - The failure path is a WARN_ON_ONCE plus continued use of a never-activated session that is later freed via timer refs; investigation found no info leak, OOB read, or UAF disclosure primitive.\nI:N - No out-of-bounds write, type confusion, or other integrity/write primitive was identified; the ghost session may confuse transport state but does not yield attacker-controlled memory modification.\nA:H - WARN_ON_ONCE in softirq receive context can panic the kernel (e.g. panic_on_warn), and the bug can be retriggered repeatedly by an adjacent/network peer to deny J1939/CAN service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/can/j1939/transport.c" ], "versions": [ { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "ed581989d7ea9df6f8646beba2341e32cd49a1f9", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "f6c839e717901dbd6b1c1ca807b6210222eb70f6", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "1762ca80c2b72dd1b5821c5e347713ae696276ea", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "26b18dd30e63d4fd777be429148e8e4ed66f60b2", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "177e33b655d35d72866b50aec84307119dc5f3d4", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "0bc0a7416ea73f79f915c9a05ac0858dff65cfed", "status": "affected", "versionType": "git" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fb", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/can/j1939/transport.c" ], "versions": [ { "version": "5.4", "status": "affected" }, { "version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.279", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.221", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.162", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.97", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.37", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.8", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ 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