# CVE-2022-49419: linux: In the Linux kernel, the following vulnerability has been resolved:  video: fbdev: vesafb: Fix a use-after-free due e...

CVE-2022-49419 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49419, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49419
- Priority: High
- CVSS: 7.8 (high)
- 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:  video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup  Commit b3c9a924aab6 ("fbdev: vesafb: Cleanup fb_info in .fb_destroy rather than .remove") fixed a use-after-free error due the vesafb driver freeing the fb_info in the .remove handler instead of doing it in .fb_destroy.  This can happen if the .fb_destroy callback is executed after the .remove callback, since the former tries to access a pointer freed by the latter.  But that change didn't take into account that another possible scenario is that .fb_destroy is called before the .remove callback. For example, if no process has the fbdev chardev opened by the time the driver is removed.  If that's the case, fb_info will be freed when unregister_framebuffer() is called, making the fb_info pointer accessed in vesafb_remove() after that to no longer be valid.  To prevent that, move the expression containing the info->par to happen before the unregister_framebuffer() function call.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.5-1 | [DEBIAN-CVE-2022-49419](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49419.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.5-1 | [DEBIAN-CVE-2022-49419](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49419.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.5-1 | [DEBIAN-CVE-2022-49419](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49419.md) | Feb 26, 2025 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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