{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43061","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.981Z","datePublished":"2026-05-05T15:17:27.079Z","dateUpdated":"2026-05-11T22:16:57.512Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:16:57.512Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix TX deadlock when using DMA\n\n`dmaengine_terminate_async` does not guarantee that the\n`__dma_tx_complete` callback will run. The callback is currently the\nonly place where `dma->tx_running` gets cleared. If the transaction is\ncanceled and the callback never runs, then `dma->tx_running` will never\nget cleared and we will never schedule new TX DMA transactions again.\n\nThis change makes it so we clear `dma->tx_running` after we terminate\nthe DMA transaction. This is \"safe\" because `serial8250_tx_dma_flush`\nis holding the UART port lock. The first thing the callback does is also\ngrab the UART port lock, so access to `dma->tx_running` is serialized."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/8250/8250_dma.c"],"versions":[{"version":"7c47e637dfadfbc691dd297b91d81ef939ca2080","lessThan":"8190f9ab6ad90cb97652adbebd238b874a4ef70d","status":"affected","versionType":"git"},{"version":"bf3f395b9c37956eca866c9e1679769ed7dcce68","lessThan":"79a19bd936bb35f56ef0ccab1b3b59ebce8c762d","status":"affected","versionType":"git"},{"version":"d470522c597b73e63cca04f3012aec28185113b7","lessThan":"f76d91271bcacbd759a2e4ee3ea61faa6a727ccf","status":"affected","versionType":"git"},{"version":"5e00346deb7bf40a4cf70e3716ac8e9a2409eb55","lessThan":"d2719a0a9c3439abf67843a5504b7afccd9ded93","status":"affected","versionType":"git"},{"version":"c8a52c772c7c6de72257a435bcad03d3bb914a70","lessThan":"2a72403b985aea6b4aac3171830492f9a387f9e1","status":"affected","versionType":"git"},{"version":"9e512eaaf8f4008c44ede3dfc0fbc9d9c5118583","lessThan":"5f6b17562f03fc65c7d3474ef8f1959b19d1ca41","status":"affected","versionType":"git"},{"version":"9e512eaaf8f4008c44ede3dfc0fbc9d9c5118583","lessThan":"b5ad887339503103d0fbe9827b16ad287597c275","status":"affected","versionType":"git"},{"version":"9e512eaaf8f4008c44ede3dfc0fbc9d9c5118583","lessThan":"a424a34b8faddf97b5af41689087e7a230f79ba7","status":"affected","versionType":"git"},{"version":"bbec5998d7bd349730f59c959a8b00cfff816e34","status":"affected","versionType":"git"},{"version":"59f751db7f392fa7a58cbd972205982f7f4f5854","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/8250/8250_dma.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.167","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.130","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.78","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.20","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.10","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"5.10.235","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.179","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.129","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.79","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.16","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.19.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d"},{"url":"https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d"},{"url":"https://git.kernel.org/stable/c/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf"},{"url":"https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93"},{"url":"https://git.kernel.org/stable/c/2a72403b985aea6b4aac3171830492f9a387f9e1"},{"url":"https://git.kernel.org/stable/c/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41"},{"url":"https://git.kernel.org/stable/c/b5ad887339503103d0fbe9827b16ad287597c275"},{"url":"https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7"}],"title":"serial: 8250: Fix TX deadlock when using DMA","x_generator":{"engine":"bippy-1.2.0"}}}}