{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54039", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T10:53:46.181Z", "datePublished": "2025-12-24T10:56:05.365Z", "dateUpdated": "2026-05-11T19:54:14.838Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:54:14.838Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access\n\nIn the j1939_tp_tx_dat_new() function, an out-of-bounds memory access\ncould occur during the memcpy() operation if the size of skb->cb is\nlarger than the size of struct j1939_sk_buff_cb. This is because the\nmemcpy() operation uses the size of skb->cb, leading to a read beyond\nthe struct j1939_sk_buff_cb.\n\nUpdated the memcpy() operation to use the size of struct\nj1939_sk_buff_cb instead of the size of skb->cb. This ensures that the\nmemcpy() operation only reads the memory within the bounds of struct\nj1939_sk_buff_cb, preventing out-of-bounds memory access.\n\nAdditionally, add a BUILD_BUG_ON() to check that the size of skb->cb\nis greater than or equal to the size of struct j1939_sk_buff_cb. This\nensures that the skb->cb buffer is large enough to hold the\nj1939_sk_buff_cb structure.\n\n[mkl: rephrase commit message]"}], "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": "d2136f05690c272dfc9f9d6efcc51d5f53494b33", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "70caa596d158a5d84b117f722d58f3ea503a5ba9", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "4fe1d9b6231a68ffc91318f57fd8e4982f028cf7", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "4c3fb22a6ec68258ee129a2e6b720f43dffc562f", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "36befc9aed6202b4a9b906529aea13eacd7e34ff", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "b45193cb4df556fe6251b285a5ce44046dd36b4a", "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": "5.4.241", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.178", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.107", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.24", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.11", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "5.4", "versionEndExcluding": "5.4.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.10.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.107"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d2136f05690c272dfc9f9d6efcc51d5f53494b33"}, {"url": "https://git.kernel.org/stable/c/70caa596d158a5d84b117f722d58f3ea503a5ba9"}, {"url": "https://git.kernel.org/stable/c/4fe1d9b6231a68ffc91318f57fd8e4982f028cf7"}, {"url": "https://git.kernel.org/stable/c/4c3fb22a6ec68258ee129a2e6b720f43dffc562f"}, {"url": "https://git.kernel.org/stable/c/36befc9aed6202b4a9b906529aea13eacd7e34ff"}, {"url": "https://git.kernel.org/stable/c/b45193cb4df556fe6251b285a5ce44046dd36b4a"}], "title": "can: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access\n\nIn the j1939_tp_tx_dat_new() function, an out-of-bounds memory access\ncould occur during the memcpy() operation if the size of skb->cb is\nlarger than the size of struct j1939_sk_buff_cb. This is because the\nmemcpy() operation uses the size of skb->cb, leading to a read beyond\nthe struct j1939_sk_buff_cb.\n\nUpdated the memcpy() operation to use the size of struct\nj1939_sk_buff_cb instead of the size of skb->cb. This ensures that the\nmemcpy() operation only reads the memory within the bounds of struct\nj1939_sk_buff_cb, preventing out-of-bounds memory access.\n\nAdditionally, add a BUILD_BUG_ON() to check that the size of skb->cb\nis greater than or equal to the size of struct j1939_sk_buff_cb. This\nensures that the skb->cb buffer is large enough to hold the\nj1939_sk_buff_cb structure.\n\n[mkl: rephrase commit message]"}], "id": "CVE-2023-54039", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-24T11:15:56.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36befc9aed6202b4a9b906529aea13eacd7e34ff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c3fb22a6ec68258ee129a2e6b720f43dffc562f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4fe1d9b6231a68ffc91318f57fd8e4982f028cf7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/70caa596d158a5d84b117f722d58f3ea503a5ba9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b45193cb4df556fe6251b285a5ce44046dd36b4a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d2136f05690c272dfc9f9d6efcc51d5f53494b33"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: can: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access", "id": "2424962", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2424962"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncan: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access\nIn the j1939_tp_tx_dat_new() function, an out-of-bounds memory access\ncould occur during the memcpy() operation if the size of skb->cb is\nlarger than the size of struct j1939_sk_buff_cb. This is because the\nmemcpy() operation uses the size of skb->cb, leading to a read beyond\nthe struct j1939_sk_buff_cb.\nUpdated the memcpy() operation to use the size of struct\nj1939_sk_buff_cb instead of the size of skb->cb. This ensures that the\nmemcpy() operation only reads the memory within the bounds of struct\nj1939_sk_buff_cb, preventing out-of-bounds memory access.\nAdditionally, add a BUILD_BUG_ON() to check that the size of skb->cb\nis greater than or equal to the size of struct j1939_sk_buff_cb. This\nensures that the skb->cb buffer is large enough to hold the\nj1939_sk_buff_cb structure.\n[mkl: rephrase commit message]"], "name": "CVE-2023-54039", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54039\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54039\nhttps://lore.kernel.org/linux-cve-announce/2025122439-CVE-2023-54039-82a4@gregkh/T"], "threat_severity": "Important"}

{}