{"id":"CVE-2026-64234","summary":"tty: serial: pch_uart: add check for dma_alloc_coherent()","details":"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.","modified":"2026-07-27T04:03:20.635464667Z","published":"2026-07-24T15:27:40.263Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64234.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/66f8bfea055b23719b4fd6ce207c44de37d82a59"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6fe472c1bbbe238e91141f7cabc1226e96a60d43"},{"type":"WEB","url":"https://git.kernel.org/stable/c/760df81763b391bb5f0dcb0b7597b736da753ae4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8d53a343ebe74274ca17b1e1993042e99f8c863"},{"type":"WEB","url":"https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64234.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64234"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3c6a483275f47a2ef7119309ad3d791c10cf30da"},{"fixed":"760df81763b391bb5f0dcb0b7597b736da753ae4"},{"fixed":"5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf"},{"fixed":"daea997bb244aeb50cbb2e5e075fb446a6cf068f"},{"fixed":"6dd5c0ea139b586ad5a091677056dafd405cfe82"},{"fixed":"d846df2dfbc2469a688833b4cc4f8aa80672bde8"},{"fixed":"66f8bfea055b23719b4fd6ce207c44de37d82a59"},{"fixed":"d8d53a343ebe74274ca17b1e1993042e99f8c863"},{"fixed":"6fe472c1bbbe238e91141f7cabc1226e96a60d43"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64234.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.93"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64234.json"}}],"schema_version":"1.7.5"}