# CVE-2023-28327: linux: A NULL pointer dereference flaw was found in the UNIX protocol in net/unix/diag.c In unix_diag_get_exact in the Linux...

CVE-2023-28327 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-28327, released April 19, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-28327
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 19, 2023

## Description

A NULL pointer dereference flaw was found in the UNIX protocol in net/unix/diag.c In unix_diag_get_exact in the Linux Kernel. The newly allocated skb does not have sk, leading to a NULL pointer. This flaw allows a local user to crash or potentially cause a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2023-28327](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28327.md) | Apr 19, 2023 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2023-28327](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28327.md) | Apr 19, 2023 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2023-28327](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28327.md) | Apr 19, 2023 |

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