{"id":"CVE-2022-50576","state":"PUBLISHED","title":"serial: pch: Fix PCI device refcount leak in pch_request_dma()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: pch: Fix PCI device refcount leak in pch_request_dma()\n\nAs comment of pci_get_slot() says, it returns a pci_device with its\nrefcount increased. The caller must decrement the reference count by\ncalling pci_dev_put().\n\nSince 'dma_dev' is only used to filter the channel in filter(), we can\ncall pci_dev_put() before exiting from pch_request_dma(). Add the\nmissing pci_dev_put() for the normal and error path.","publishedAt":"2025-10-22T13:23:30.250Z","updatedAt":"2026-05-11T19:22:05.824Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"90ff030ca10b69feeebda1427550ebf9ed2ad868","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"dfd15c5550b9190d5b0f9bcacb3e6436322f3854","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"d165388227aa7e46a9751b90bae6337b5335cdbb","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"4f5d28865c665c9064de631a518f9bc8099d9ce4","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"516614a371c26e3334625b4bca19a5362bf658d6","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"8be3a7bf773700534a6e8f87f6ed2ed111254be5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.38","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.38","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]}],"references":["https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868","https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a","https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854","https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb","https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5","https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02","https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4","https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6","https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50576.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50576","state":"PUBLISHED","datePublished":"2025-10-22T13:23:30.250Z","dateUpdated":"2026-05-11T19:22:05.824Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-22T13:20:23.761Z"},"containers":{"cna":{"title":"serial: pch: Fix PCI device refcount leak in pch_request_dma()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: pch: Fix PCI device refcount leak in pch_request_dma()\n\nAs comment of pci_get_slot() says, it returns a pci_device with its\nrefcount increased. The caller must decrement the reference count by\ncalling pci_dev_put().\n\nSince 'dma_dev' is only used to filter the channel in filter(), we can\ncall pci_dev_put() before exiting from pch_request_dma(). Add the\nmissing pci_dev_put() for the normal and error path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"90ff030ca10b69feeebda1427550ebf9ed2ad868","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"dfd15c5550b9190d5b0f9bcacb3e6436322f3854","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"d165388227aa7e46a9751b90bae6337b5335cdbb","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"4f5d28865c665c9064de631a518f9bc8099d9ce4","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"516614a371c26e3334625b4bca19a5362bf658d6","versionType":"git"},{"version":"3c6a483275f47a2ef7119309ad3d791c10cf30da","status":"affected","lessThan":"8be3a7bf773700534a6e8f87f6ed2ed111254be5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.38","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.38","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868"},{"url":"https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a"},{"url":"https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854"},{"url":"https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb"},{"url":"https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5"},{"url":"https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02"},{"url":"https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4"},{"url":"https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6"},{"url":"https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:22:05.824Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"4.9.337"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"4.14.303"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"4.19.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.2"}]}]}],"x_generat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