{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43149", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.989Z", "datePublished": "2026-05-06T11:27:31.708Z", "dateUpdated": "2026-05-06T11:27:31.708Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T11:27:31.708Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": 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{}

{"cveTags": [], "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."}], "id": "CVE-2026-43149", "lastModified": "2026-05-06T13:07:51.607", "metrics": {}, "published": "2026-05-06T12:16:32.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()", "id": "2467106", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467106"}, "csaw": false, "cwe": "CWE-1341", "details": ["A flaw was found in the Linux kernel's `fsl_ucc_hdlc` module. The `uhdlc_memclean()` function incorrectly deallocates memory by calling `dma_free_coherent()` twice for buffers that were allocated as a single contiguous block. This improper memory handling may lead to a denial of service (DoS) or other unpredictable system behavior due to memory corruption."], "name": "CVE-2026-43149", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43149\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43149\nhttps://lore.kernel.org/linux-cve-announce/2026050627-CVE-2026-43149-cd24@gregkh/T"]}

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