# CVE-2023-52893: linux: In the Linux kernel, the following vulnerability has been resolved:  gsmi: fix null-deref in gsmi_get_variable  We ca...

CVE-2023-52893 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52893, released August 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-52893
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  gsmi: fix null-deref in gsmi_get_variable  We can get EFI variables without fetching the attribute, so we must allow for that in gsmi.  commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.8-1 | [DEBIAN-CVE-2023-52893](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52893.md) | Aug 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.1.8-1 | [DEBIAN-CVE-2023-52893](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52893.md) | Aug 21, 2024 |
| Linux | linux Debian 14 | 6.1.8-1 | [DEBIAN-CVE-2023-52893](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52893.md) | Aug 21, 2024 |

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