# CVE-2023-54105: linux: In the Linux kernel, the following vulnerability has been resolved:  can: isotp: check CAN address family in isotp_bi...

CVE-2023-54105 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54105, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-54105
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  can: isotp: check CAN address family in isotp_bind()  Add missing check to block non-AF_CAN binds.  Syzbot created some code which matched the right sockaddr struct size but used AF_XDP (0x2C) instead of AF_CAN (0x1D) in the address family field:  bind$xdp(r2, &(0x7f0000000540)={0x2c, 0x0, r4, 0x0, r2}, 0x10)                                 ^^^^ This has no funtional impact but the userspace should be notified about the wrong address family field content.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2023-54105](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54105.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2023-54105](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54105.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2023-54105](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54105.md) | Dec 24, 2025 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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