{"api_version":"1","generated_at":"2026-07-23T12:13:49+00:00","cve":"CVE-2024-49977","urls":{"html":"https://cve.report/CVE-2024-49977","api":"https://cve.report/api/cve/CVE-2024-49977.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-49977","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-49977"},"summary":{"title":"net: stmmac: Fix zero-division error when disabling tc cbs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix zero-division error when disabling tc cbs\n\nThe commit b8c43360f6e4 (\"net: stmmac: No need to calculate speed divider\nwhen offload is disabled\") allows the \"port_transmit_rate_kbps\" to be\nset to a value of 0, which is then passed to the \"div_s64\" function when\ntc-cbs is disabled. This leads to a zero-division error.\n\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\ncredit values are not required to be configured. Therefore, adding a return\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\nprevent a zero-division error.","state":"PUBLISHED","assigner":"Linux","published_at":"2024-10-21 18:15:18","updated_at":"2026-05-12 12:17:19"},"problem_types":["CWE-369"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c","name":"https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","name":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","name":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","refsource":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368","name":"https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6","name":"https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e","name":"https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93","name":"https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df","name":"https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","name":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","refsource":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9","name":"https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","name":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-49977","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49977","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b4bca4722fda928810d024350493990de39f1e40 e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2145583e5995598f50d66f8710c86bb1e910ac46 b0da9504a528f05f97d926b4db74ff21917a33e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 521d42a1c24d638241220d4b9fa7e7a0ed02b88e 5d43e1ad4567d67af2b42d3ab7c14152ffed25c6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a71b686418ee6bcb6d6365f7f6d838d9874d9c64 03582f4752427f60817d896f1a827aff772bd31e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8c43360f6e424131fa81d3ba8792ad8ff25a09e e297a2bf56d12fd7f91a0c209eb6ea84361f3368 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8c43360f6e424131fa81d3ba8792ad8ff25a09e 837d9df9c0792902710149d1a5e0991520af0f93 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8c43360f6e424131fa81d3ba8792ad8ff25a09e 675faf5a14c14a2be0b870db30a70764df81e2df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f01782804147a8c21f481b3342c83422c041d2c0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.227 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.168 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.113 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.55 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10.14 6.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11.3 6.11.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 * original_commit_for_fix","platforms":[]},{"source":"ADP","vendor":"Siemens","product":"RUGGEDCOM RST2428P","version":"affected V3.2 custom","platforms":[]},{"source":"ADP","vendor":"Siemens","product":"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family","version":"affected V3.2 custom","platforms":[]},{"source":"ADP","vendor":"Siemens","product":"SCALANCE XCM-/XRM-/XCH-/XRH-300 family","version":"affected V3.2 custom","platforms":[]},{"source":"ADP","vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","version":"affected * custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2024","cve_id":"49977","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2024-49977","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-10-22T13:33:01.213521Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2024-10-22T13:38:45.017Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"},{"providerMetadata":{"dateUpdated":"2025-11-03T22:23:57.678Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"title":"CVE Program Container"},{"affected":[{"defaultStatus":"unknown","product":"RUGGEDCOM RST2428P","vendor":"Siemens","versions":[{"lessThan":"V3.2","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family","vendor":"Siemens","versions":[{"lessThan":"V3.2","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SCALANCE XCM-/XRM-/XCH-/XRH-300 family","vendor":"Siemens","versions":[{"lessThan":"V3.2","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"custom"}]}],"providerMetadata":{"dateUpdated":"2026-05-12T11:59:29.199Z","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP"},"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}],"x_adpType":"supplier"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c","status":"affected","version":"b4bca4722fda928810d024350493990de39f1e40","versionType":"git"},{"lessThan":"b0da9504a528f05f97d926b4db74ff21917a33e9","status":"affected","version":"2145583e5995598f50d66f8710c86bb1e910ac46","versionType":"git"},{"lessThan":"5d43e1ad4567d67af2b42d3ab7c14152ffed25c6","status":"affected","version":"521d42a1c24d638241220d4b9fa7e7a0ed02b88e","versionType":"git"},{"lessThan":"03582f4752427f60817d896f1a827aff772bd31e","status":"affected","version":"a71b686418ee6bcb6d6365f7f6d838d9874d9c64","versionType":"git"},{"lessThan":"e297a2bf56d12fd7f91a0c209eb6ea84361f3368","status":"affected","version":"b8c43360f6e424131fa81d3ba8792ad8ff25a09e","versionType":"git"},{"lessThan":"837d9df9c0792902710149d1a5e0991520af0f93","status":"affected","version":"b8c43360f6e424131fa81d3ba8792ad8ff25a09e","versionType":"git"},{"lessThan":"675faf5a14c14a2be0b870db30a70764df81e2df","status":"affected","version":"b8c43360f6e424131fa81d3ba8792ad8ff25a09e","versionType":"git"},{"status":"affected","version":"f01782804147a8c21f481b3342c83422c041d2c0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.227","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.168","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.113","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.55","versionType":"semver"},{"lessThanOrEqual":"6.10.*","status":"unaffected","version":"6.10.14","versionType":"semver"},{"lessThanOrEqual":"6.11.*","status":"unaffected","version":"6.11.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.12","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.227","versionStartIncluding":"5.10.221","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.168","versionStartIncluding":"5.15.162","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.113","versionStartIncluding":"6.1.96","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.55","versionStartIncluding":"6.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.10.14","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.11.3","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix zero-division error when disabling tc cbs\n\nThe commit b8c43360f6e4 (\"net: stmmac: No need to calculate speed divider\nwhen offload is disabled\") allows the \"port_transmit_rate_kbps\" to be\nset to a value of 0, which is then passed to the \"div_s64\" function when\ntc-cbs is disabled. This leads to a zero-division error.\n\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\ncredit values are not required to be configured. Therefore, adding a return\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\nprevent a zero-division error."}],"providerMetadata":{"dateUpdated":"2026-05-11T20:43:11.759Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c"},{"url":"https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9"},{"url":"https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6"},{"url":"https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e"},{"url":"https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368"},{"url":"https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93"},{"url":"https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df"}],"title":"net: stmmac: Fix zero-division error when disabling tc cbs","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-49977","datePublished":"2024-10-21T18:02:24.480Z","dateReserved":"2024-10-21T12:17:06.052Z","dateUpdated":"2026-05-12T11:59:29.199Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-10-21 18:15:18","lastModifiedDate":"2026-05-12 12:17:19","problem_types":["CWE-369"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.221","versionEndExcluding":"5.10.227","matchCriteriaId":"D7180F0F-394B-4ABD-991F-58AB9D90F314"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.162","versionEndExcluding":"5.15.168","matchCriteriaId":"99F757B5-48A7-4EB4-AA02-72DAFF9A9814"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.96","versionEndExcluding":"6.1.113","matchCriteriaId":"0A2FE2CA-C4B3-41E4-8DBD-D5F345CA4FCC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.36","versionEndExcluding":"6.6.55","matchCriteriaId":"75DA43B5-E344-4A3A-A3FC-4ABAD4317D58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.7","versionEndExcluding":"6.10","matchCriteriaId":"FA5E7970-A460-40EE-9BDE-6FFF21149DDA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.10.14","matchCriteriaId":"20A9A1A8-B921-4FB1-BC2B-00E240DE3643"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.11.3","matchCriteriaId":"54D9C704-D679-41A7-9C40-10A6B1E7FFE9"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2024","CveId":"49977","Ordinal":"1","Title":"net: stmmac: Fix zero-division error when disabling tc cbs","CVE":"CVE-2024-49977","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"49977","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix zero-division error when disabling tc cbs\n\nThe commit b8c43360f6e4 (\"net: stmmac: No need to calculate speed divider\nwhen offload is disabled\") allows the \"port_transmit_rate_kbps\" to be\nset to a value of 0, which is then passed to the \"div_s64\" function when\ntc-cbs is disabled. This leads to a zero-division error.\n\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\ncredit values are not required to be configured. Therefore, adding a return\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\nprevent a zero-division error.","Type":"Description","Title":"net: stmmac: Fix zero-division error when disabling tc cbs"}]}}}