# CVE-2022-49500: linux: In the Linux kernel, the following vulnerability has been resolved:  wl1251: dynamically allocate memory used for DMA...

CVE-2022-49500 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49500, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49500
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  wl1251: dynamically allocate memory used for DMA  With introduction of vmap'ed stacks, stack parameters can no longer be used for DMA and now leads to kernel panic.  It happens at several places for the wl1251 (e.g. when accessed through SDIO) making it unuseable on e.g. the OpenPandora.  We solve this by allocating temporary buffers or use wl1251_read32().  Tested on v5.18-rc5 with OpenPandora.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.5-1 | [DEBIAN-CVE-2022-49500](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49500.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.5-1 | [DEBIAN-CVE-2022-49500](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49500.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.5-1 | [DEBIAN-CVE-2022-49500](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49500.md) | Feb 26, 2025 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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