{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-56645", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.840Z", "datePublished": "2024-12-27T15:02:46.531Z", "dateUpdated": "2025-05-04T10:00:55.403Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T10:00:55.403Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: j1939_session_new(): fix skb reference counting\n\nSince j1939_session_skb_queue() does an extra skb_get() for each new\nskb, do the same for the initial one in j1939_session_new() to avoid\nrefcount underflow.\n\n[mkl: clean up 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": "224e606a8d8e8c7db94036272c47a37455667313", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "b3282c2bebeeb82ceec492ee4972f51ee7a4a132", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "4199dd78a59896e091d3a7a05a77451aa7fd724d", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "f117cba69cbbd496babb3defcdf440df4fd6fe14", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "426d94815e12b6bdb9a75af294fbbafb9301601d", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "68fceb143b635cdc59fed3896d5910aff38f345e", "status": "affected", "versionType": "git"}, {"version": "9d71dd0c70099914fcd063135da3c580865e924c", "lessThan": "a8c695005bfe6569acd73d777ca298ddddd66105", "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": "5.4.287", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.231", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.174", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "5.4.287"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.10.231"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.174"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/224e606a8d8e8c7db94036272c47a37455667313"}, {"url": "https://git.kernel.org/stable/c/b3282c2bebeeb82ceec492ee4972f51ee7a4a132"}, {"url": "https://git.kernel.org/stable/c/4199dd78a59896e091d3a7a05a77451aa7fd724d"}, {"url": "https://git.kernel.org/stable/c/f117cba69cbbd496babb3defcdf440df4fd6fe14"}, {"url": "https://git.kernel.org/stable/c/426d94815e12b6bdb9a75af294fbbafb9301601d"}, {"url": "https://git.kernel.org/stable/c/68fceb143b635cdc59fed3896d5910aff38f345e"}, {"url": "https://git.kernel.org/stable/c/a8c695005bfe6569acd73d777ca298ddddd66105"}], "title": "can: j1939: j1939_session_new(): fix skb reference counting", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: j1939_session_new(): fix skb reference counting\n\nSince j1939_session_skb_queue() does an extra skb_get() for each new\nskb, do the same for the initial one in j1939_session_new() to avoid\nrefcount underflow.\n\n[mkl: clean up commit message]"}], "id": "CVE-2024-56645", "lastModified": "2024-12-27T15:15:24.260", "metrics": {}, "published": "2024-12-27T15:15:24.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/224e606a8d8e8c7db94036272c47a37455667313"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4199dd78a59896e091d3a7a05a77451aa7fd724d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/426d94815e12b6bdb9a75af294fbbafb9301601d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68fceb143b635cdc59fed3896d5910aff38f345e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a8c695005bfe6569acd73d777ca298ddddd66105"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b3282c2bebeeb82ceec492ee4972f51ee7a4a132"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f117cba69cbbd496babb3defcdf440df4fd6fe14"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: can: j1939: j1939_session_new(): fix skb reference counting", "id": "2334560", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334560"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncan: j1939: j1939_session_new(): fix skb reference counting\nSince j1939_session_skb_queue() does an extra skb_get() for each new\nskb, do the same for the initial one in j1939_session_new() to avoid\nrefcount underflow.\n[mkl: clean up commit message]"], "name": "CVE-2024-56645", "package_state": [{"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": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56645\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56645\nhttps://lore.kernel.org/linux-cve-announce/2024122738-CVE-2024-56645-bc11@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:44:52.658781+00:00", "updated": "2025-07-12T22:44:52.658871+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}