CVE-2023-52617: PCI: switchtec: Fix stdev_release() crash after surprise hot remove
First published: Mon Mar 18 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: PCI: switchtec: Fix stdev_release() crash after surprise hot remove A PCI device hot removal may occur while stdev->cdev is held open. The call to stdev_release() then happens during close or exit, at a point way past switchtec_pci_remove(). Otherwise the last ref would vanish with the trailing put_device(), just before return. At that later point in time, the devm cleanup has already removed the stdev->mmio_mrpc mapping. Also, the stdev->pdev reference was not a counted one. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause a fatal page fault, and the subsequent dma_free_coherent(), if reached, would pass a stale &stdev->pdev->dev pointer. Fix by moving MRPC DMA shutdown into switchtec_pci_remove(), after stdev_kill(). Counting the stdev->pdev ref is now optional, but may prevent future accidents. Reproducible via the script at https://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3
- https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20a
- https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24c
- https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355
- https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66
- https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693
- https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8
- https://launchpad.net/bugs/cve/CVE-2023-52617
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52617
- https://nvd.nist.gov/vuln/detail/CVE-2023-52617
- https://security-tracker.debian.org/tracker/CVE-2023-52617
- https://ubuntu.com/security/CVE-2023-52617
- https://git.kernel.org/linus/df25461119d987b8c81d232cfe4411e91dcabe66
- agent/title
- agent/type
- agent/remedy
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/nvd-api
- source/NVD
- collector/nvd-cve
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/references
- agent/trending
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/softwarecombine
- agent/source
- package-manager/debian