{"api_version":"1","generated_at":"2026-07-24T19:45:49+00:00","cve":"CVE-2026-43149","urls":{"html":"https://cve.report/CVE-2026-43149","api":"https://cve.report/api/cve/CVE-2026-43149.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43149","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43149"},"summary":{"title":"net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()\n\nThe priv->rx_buffer and priv->tx_buffer are alloc'd together as\ncontiguous buffers in uhdlc_init() but freed as two buffers in\nuhdlc_memclean().\n\nChange the cleanup to only call dma_free_coherent() once on the whole\nbuffer.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:32","updated_at":"2026-05-13 20:15:21"},"problem_types":["NVD-CWE-noinfo"],"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/36bd7d5deef936c4e1e3cd341598140e5c14c1d3","name":"https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285","name":"https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e","name":"https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970","name":"https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d","name":"https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b","name":"https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b","name":"https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4","name":"https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43149","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43149","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b 6496fb830cbb741d831225cc4e7e5601c6e42970 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b 011ae5dd84dc9f05eb9b8e1adff44252ac776e7b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b 0f85a9655445e67bb0238cfc983d7c383b54938e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b 84b932bc9899d43e5829e6cf088b72d73a922b2b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b d8a522085d09b30aba1016daf1dddac37c0f0285 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b d68994e37ac3b285692559776e0279a88a3b5f8d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c19b6d246a35627c3a69b2fa6bdece212b48214b 36bd7d5deef936c4e1e3cd341598140e5c14c1d3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.252 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.202 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.16 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.6 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"43149","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":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wan/fsl_ucc_hdlc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6496fb830cbb741d831225cc4e7e5601c6e42970","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"011ae5dd84dc9f05eb9b8e1adff44252ac776e7b","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"0f85a9655445e67bb0238cfc983d7c383b54938e","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"84b932bc9899d43e5829e6cf088b72d73a922b2b","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"d8a522085d09b30aba1016daf1dddac37c0f0285","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"d68994e37ac3b285692559776e0279a88a3b5f8d","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"},{"lessThan":"36bd7d5deef936c4e1e3cd341598140e5c14c1d3","status":"affected","version":"c19b6d246a35627c3a69b2fa6bdece212b48214b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wan/fsl_ucc_hdlc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.8"},{"lessThan":"4.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.252","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.16","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()\n\nThe priv->rx_buffer and priv->tx_buffer are alloc'd together as\ncontiguous buffers in uhdlc_init() but freed as two buffers in\nuhdlc_memclean().\n\nChange the cleanup to only call dma_free_coherent() once on the whole\nbuffer."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:18:42.659Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970"},{"url":"https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4"},{"url":"https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b"},{"url":"https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e"},{"url":"https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b"},{"url":"https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285"},{"url":"https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d"},{"url":"https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3"}],"title":"net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43149","datePublished":"2026-05-06T11:27:31.708Z","dateReserved":"2026-05-01T14:12:55.989Z","dateUpdated":"2026-05-11T22:18:42.659Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:32","lastModifiedDate":"2026-05-13 20:15:21","problem_types":["NVD-CWE-noinfo"],"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":"4.8","versionEndExcluding":"5.10.252","matchCriteriaId":"697D9392-58FC-4BC4-98E1-C18E1B2388F4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.202","matchCriteriaId":"4002FC2B-1456-4666-B240-0EBF590C4671"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.165","matchCriteriaId":"797C7F46-D0BE-4FB8-A502-C5EF8E6B6654"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.128","matchCriteriaId":"851E9353-6C09-4CC9-877E-E09DB164A3C2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.75","matchCriteriaId":"BCE16369-98ED-41CF-8995-DFDC10B288D2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.16","matchCriteriaId":"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.6","matchCriteriaId":"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43149","Ordinal":"1","Title":"net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean","CVE":"CVE-2026-43149","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43149","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()\n\nThe priv->rx_buffer and priv->tx_buffer are alloc'd together as\ncontiguous buffers in uhdlc_init() but freed as two buffers in\nuhdlc_memclean().\n\nChange the cleanup to only call dma_free_coherent() once on the whole\nbuffer.","Type":"Description","Title":"net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean"}]}}}