CVE-2024-56739

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-56739", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T11:26:39.757Z", "datePublished": "2024-12-29T11:30:08.512Z", "dateUpdated": "2026-05-11T20:58:10.247Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:58:10.247Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue,\nthey will continually expire, may causing kernel softlockup."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/rtc/interface.c"], "versions": [{"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "0d68e8514d9040108ff7d1b37ca71096674b6efe", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "246f621d363988e7040f4546d20203dc713fa3e1", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "fde56535505dde3336df438e949ef4742b6d6d6e", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "dd4b1cbcc916fad5d10c2662b62def9f05e453d4", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "a1f0b4af90cc18b10261ecde56c6a56b22c75bd1", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "e77bce0a8c3989b4173c36f4195122bca8f4a3e1", "status": "affected", "versionType": "git"}, {"version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/rtc/interface.c"], "versions": [{"version": "2.6.38", "status": "affected"}, {"version": "0", "lessThan": "2.6.38", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.325", "lessThanOrEqual": "4.19.*", "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": "6.6.64", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "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": "2.6.38", "versionEndExcluding": "4.19.325"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.4.287"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.10.231"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.15.174"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.6.64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.11.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"}, {"url": "https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"}, {"url": "https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe"}, {"url": "https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1"}, {"url": "https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e"}, {"url": "https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4"}, {"url": "https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"}, {"url": "https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1"}, {"url": "https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"}], "title": "rtc: check if __rtc_read_time was successful in rtc_timer_do_work()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-56739", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:57:41.389389Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-908", "description": "CWE-908 Use of Uninitialized Resource"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:04.223Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:53:29.335Z"}}]}}

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"2.0.3", "timestamp": "2025-10-01T19:57:41.389389Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-908", "description": "CWE-908 Use of Uninitialized Resource"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T15:49:09.865Z"}}], "cna": {"title": "rtc: check if __rtc_read_time was successful in rtc_timer_do_work()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "0d68e8514d9040108ff7d1b37ca71096674b6efe", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "246f621d363988e7040f4546d20203dc713fa3e1", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "fde56535505dde3336df438e949ef4742b6d6d6e", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "dd4b1cbcc916fad5d10c2662b62def9f05e453d4", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "a1f0b4af90cc18b10261ecde56c6a56b22c75bd1", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "e77bce0a8c3989b4173c36f4195122bca8f4a3e1", "versionType": "git"}, {"status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "lessThan": "e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d", "versionType": "git"}], "programFiles": ["drivers/rtc/interface.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.38"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.38", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.325", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.287", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.231", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.174", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.120", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.64", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.11.11", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12.2", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/rtc/interface.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"}, {"url": "https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"}, {"url": "https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe"}, {"url": "https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1"}, {"url": "https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e"}, {"url": "https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4"}, {"url": "https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"}, {"url": "https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1"}, {"url": "https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue,\nthey will continually expire, may causing kernel softlockup."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.325", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.287", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.231", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.174", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.120", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.64", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.11", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.2", "versionStartIncluding": "2.6.38"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13", "versionStartIncluding": "2.6.38"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:58:10.247Z"}}}, "cveMetadata": {"cveId": "CVE-2024-56739", "state": "PUBLISHED", "dateUpdated": "2026-05-11T20:58:10.247Z", "dateReserved": "2024-12-29T11:26:39.757Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-12-29T11:30:08.512Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/rtc/interface.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "0d68e8514d9040108ff7d1b37ca71096674b6efe", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "246f621d363988e7040f4546d20203dc713fa3e1", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "fde56535505dde3336df438e949ef4742b6d6d6e", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "dd4b1cbcc916fad5d10c2662b62def9f05e453d4", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "a1f0b4af90cc18b10261ecde56c6a56b22c75bd1", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "e77bce0a8c3989b4173c36f4195122bca8f4a3e1", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}, {"lessThan": "e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d", "status": "affected", "version": "6610e0893b8bc6f59b14fed7f089c5997f035f88", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/rtc/interface.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.38"}, {"lessThan": "2.6.38", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.325", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.287", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.231", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.174", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.120", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.64", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.11", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CB94EE42-C491-42E4-9163-363118710E58", "versionEndExcluding": "4.19.325", "versionStartIncluding": "2.6.38", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E4B15788-D35E-4E5B-A9C0-070AE3729B34", "versionEndExcluding": "5.4.287", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935", "versionEndExcluding": "5.10.231", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89", "versionEndExcluding": "5.15.174", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265", "versionEndExcluding": "6.1.120", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CA16DEE3-ABEC-4449-9F4A-7A3DC4FC36C7", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "21434379-192D-472F-9B54-D45E3650E893", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue,\nthey will continually expire, may causing kernel softlockup."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rtc: comprobar si __rtc_read_time se ha ejecutado correctamente en rtc_timer_do_work() Si la llamada a __rtc_read_time falla, la estructura rtc_time tm; puede contener datos no inicializados o una fecha/hora ilegal le\u00edda desde el hardware RTC. Al llamar a rtc_tm_to_ktime m\u00e1s tarde, el resultado puede ser un valor muy grande (posiblemente KTIME_MAX). Si hay temporizadores peri\u00f3dicos en rtc->timerqueue, expirar\u00e1n continuamente, lo que puede provocar un bloqueo suave del kernel."}], "id": "CVE-2024-56739", "lastModified": "2026-06-17T08:12:52.533", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-56739", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T19:57:41.389389Z", "version": "2.0.3"}}]}, "published": "2024-12-29T12:15:07.240", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-908"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: rtc: check if __rtc_read_time was successful in rtc_timer_do_work()", "id": "2334829", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334829"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue,\nthey will continually expire, may causing kernel softlockup.", "A vulnerability was found in the Linux kernel's RTC driver in the rtc_timer_do_work() function, where the __rtc_read_time call may fail. This issue results in uninitialized data in the rtc_time struct. It can lead to the generation of extremely large values, causing periodic timer failures and potentially triggering a kernel softlockup, impacting system stability."], "name": "CVE-2024-56739", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56739\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56739\nhttps://lore.kernel.org/linux-cve-announce/2024122925-CVE-2024-56739-0a67@gregkh/T"], "threat_severity": "Moderate"}

{}