# CVE-2022-48705: linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: mt7921e: fix crash in chip reset fai...

CVE-2022-48705 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48705, released May 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48705
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: mt7921e: fix crash in chip reset fail  In case of drv own fail in reset, we may need to run mac_reset several times. The sequence would trigger system crash as the log below.  Because we do not re-enable/schedule "tx_napi" before disable it again, the process would keep waiting for state change in napi_diable(). To avoid the problem and keep status synchronize for each run, goto final resource handling if drv own failed.  [ 5857.353423] mt7921e 0000:3b:00.0: driver own failed [ 5858.433427] mt7921e 0000:3b:00.0: Timeout for driver own [ 5859.633430] mt7921e 0000:3b:00.0: driver own failed [ 5859.633444] ------------[ cut here ]------------ [ 5859.633446] WARNING: CPU: 6 at kernel/kthread.c:659 kthread_park+0x11d [ 5859.633717] Workqueue: mt76 mt7921_mac_reset_work [mt7921_common] [ 5859.633728] RIP: 0010:kthread_park+0x11d/0x150 [ 5859.633736] RSP: 0018:ffff8881b676fc68 EFLAGS: 00010202 ...... [ 5859.633766] Call Trace: [ 5859.633768]  <TASK> [ 5859.633771]  mt7921e_mac_reset+0x176/0x6f0 [mt7921e] [ 5859.633778]  mt7921_mac_reset_work+0x184/0x3a0 [mt7921_common] [ 5859.633785]  ? mt7921_mac_set_timing+0x520/0x520 [mt7921_common] [ 5859.633794]  ? __kasan_check_read+0x11/0x20 [ 5859.633802]  process_one_work+0x7ee/0x1320 [ 5859.633810]  worker_thread+0x53c/0x1240 [ 5859.633818]  kthread+0x2b8/0x370 [ 5859.633824]  ? process_one_work+0x1320/0x1320 [ 5859.633828]  ? kthread_complete_and_exit+0x30/0x30 [ 5859.633834]  ret_from_fork+0x1f/0x30 [ 5859.633842]  </TASK>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.19.11-1 | [DEBIAN-CVE-2022-48705](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48705.md) | May 3, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.19.11-1 | [DEBIAN-CVE-2022-48705](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48705.md) | May 3, 2024 |
| Linux | linux Debian 14 | 5.19.11-1 | [DEBIAN-CVE-2022-48705](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48705.md) | May 3, 2024 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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