# CVE-2023-52493: linux: In the Linux kernel, the following vulnerability has been resolved:  bus: mhi: host: Drop chan lock before queuing bu...

CVE-2023-52493 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52493, released March 11, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-52493
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 11, 2024

## Description

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]

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.76-1 | [DEBIAN-CVE-2023-52493](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52493.md) | Mar 11, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.6.15-1 | [DEBIAN-CVE-2023-52493](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52493.md) | Mar 11, 2024 |
| Linux | linux Debian 14 | 6.6.15-1 | [DEBIAN-CVE-2023-52493](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52493.md) | Mar 11, 2024 |

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