CVE-2023-52493: bus: mhi: host: Drop chan lock before queuing buffers
First published: Thu Feb 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Drop chan lock before queuing buffers Ensure read and write locks for the channel are not taken in succession by dropping the read lock from parse_xfer_event() such that a callback given to client can potentially queue buffers and acquire the write lock in that process. Any queueing of buffers should be done without channel read lock acquired as it can result in multiple locks and a soft lockup. [mani: added fixes tag and cc'ed stable]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.7<5.10.210 | |
| Linux Kernel | >=5.11<5.15.149 | |
| Linux Kernel | >=5.16<6.1.76 | |
| Linux Kernel | >=6.2<6.6.15 | |
| Linux Kernel | >=6.7<6.7.3 | |
| 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 |
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Reference Links
- https://git.kernel.org/stable/c/01bd694ac2f682fb8017e16148b928482bc8fa4b
- https://git.kernel.org/stable/c/20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0e
- https://git.kernel.org/stable/c/3c5ec66b4b3f6816f3a6161538672e389e537690
- https://git.kernel.org/stable/c/6e4c84316e2b70709f0d00c33ba3358d9fc8eece
- https://git.kernel.org/stable/c/b8eff20d87092e14cac976d057cb0aea2f1d0830
- https://git.kernel.org/stable/c/eaefb9464031215d63c0a8a7e2bfaa00736aa17e
- https://launchpad.net/bugs/cve/CVE-2023-52493
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52493
- https://nvd.nist.gov/vuln/detail/CVE-2023-52493
- https://security-tracker.debian.org/tracker/CVE-2023-52493
- https://ubuntu.com/security/CVE-2023-52493
- https://git.kernel.org/linus/01bd694ac2f682fb8017e16148b928482bc8fa4b
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