{"id":"CVE-2023-52617","summary":"PCI: switchtec: Fix stdev_release() crash after surprise hot remove","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: switchtec: Fix stdev_release() crash after surprise hot remove\n\nA PCI device hot removal may occur while stdev-\u003ecdev is held open. The call\nto stdev_release() then happens during close or exit, at a point way past\nswitchtec_pci_remove(). Otherwise the last ref would vanish with the\ntrailing put_device(), just before return.\n\nAt that later point in time, the devm cleanup has already removed the\nstdev-\u003emmio_mrpc mapping. Also, the stdev-\u003epdev reference was not a counted\none. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause\na fatal page fault, and the subsequent dma_free_coherent(), if reached,\nwould pass a stale &stdev-\u003epdev-\u003edev pointer.\n\nFix by moving MRPC DMA shutdown into switchtec_pci_remove(), after\nstdev_kill(). Counting the stdev-\u003epdev ref is now optional, but may prevent\nfuture accidents.\n\nReproducible via the script at\nhttps://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com","modified":"2026-04-02T09:43:07.023756Z","published":"2024-03-18T10:19:04.651Z","related":["SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","SUSE-SU-2024:1490-1","USN-6818-2","USN-6819-2"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52617.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52617.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52617"},{"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":"f7eb7b8a4f72b0d9dea69b09f58185ffab97fd35"},{"fixed":"d8c293549946ee5078ed0ab77793cec365559355"},{"fixed":"4a5d0528cf19dbf060313dffbe047bc11c90c24c"},{"fixed":"ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8"},{"fixed":"1d83c85922647758c1f1e4806a4c5c3cf591a20a"},{"fixed":"0233b836312e39a3c763fb53512b3fa455b473b3"},{"fixed":"e129c7fa7070fbce57feb0bfc5eaa65eef44b693"},{"fixed":"df25461119d987b8c81d232cfe4411e91dcabe66"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52617.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}]}