{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64234", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.771Z", "datePublished": "2026-07-24T15:27:40.263Z", "dateUpdated": "2026-07-24T15:27:40.263Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T15:27:40.263Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: pch_uart: add check for dma_alloc_coherent()\n\nAdd a check for dma_alloc_coherent() failure to prevent a potential\nNULL pointer dereference in dma_handle_rx(). Properly release DMA\nchannels and the PCI device reference using a goto ladder if the\nallocation fails."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/serial/pch_uart.c"], "versions": [{"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "760df81763b391bb5f0dcb0b7597b736da753ae4", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "daea997bb244aeb50cbb2e5e075fb446a6cf068f", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "6dd5c0ea139b586ad5a091677056dafd405cfe82", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "d846df2dfbc2469a688833b4cc4f8aa80672bde8", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "66f8bfea055b23719b4fd6ce207c44de37d82a59", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "d8d53a343ebe74274ca17b1e1993042e99f8c863", "status": "affected", "versionType": "git"}, {"version": "3c6a483275f47a2ef7119309ad3d791c10cf30da", "lessThan": "6fe472c1bbbe238e91141f7cabc1226e96a60d43", "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/tty/serial/pch_uart.c"], "versions": [{"version": "2.6.38", "status": "affected"}, {"version": "0", "lessThan": "2.6.38", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/760df81763b391bb5f0dcb0b7597b736da753ae4"}, {"url": "https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf"}, {"url": "https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068f"}, {"url": "https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82"}, {"url": "https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8"}, {"url": "https://git.kernel.org/stable/c/66f8bfea055b23719b4fd6ce207c44de37d82a59"}, {"url": "https://git.kernel.org/stable/c/d8d53a343ebe74274ca17b1e1993042e99f8c863"}, {"url": "https://git.kernel.org/stable/c/6fe472c1bbbe238e91141f7cabc1226e96a60d43"}], "title": "tty: serial: pch_uart: add check for dma_alloc_coherent()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{}

{"bugzilla": {"description": "kernel: tty: serial: pch_uart: add check for dma_alloc_coherent()", "id": "2506828", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506828"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's `tty` subsystem, specifically within the `pch_uart` serial driver. This vulnerability occurs due to a missing check for the return value of `dma_alloc_coherent()`. An attacker could potentially exploit this to trigger a NULL pointer dereference in the `dma_handle_rx()` function, leading to a system crash and a Denial of Service (DoS)."], "name": "CVE-2026-64234", "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": "2026-07-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64234\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64234\nhttps://lore.kernel.org/linux-cve-announce/2026072440-CVE-2026-64234-ce43@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,760df81763b391bb5f0dcb0b7597b736da753ae4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,daea997bb244aeb50cbb2e5e075fb446a6cf068f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,6dd5c0ea139b586ad5a091677056dafd405cfe82)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,d846df2dfbc2469a688833b4cc4f8aa80672bde8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,66f8bfea055b23719b4fd6ce207c44de37d82a59)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,d8d53a343ebe74274ca17b1e1993042e99f8c863)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c6a483275f47a2ef7119309ad3d791c10cf30da,6fe472c1bbbe238e91141f7cabc1226e96a60d43)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.38"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.38)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.93,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-24T21:15:02.717173+00:00", "updated": "2026-08-01T02:45:17.255291+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}