# CVE-2023-53000: linux: In the Linux kernel, the following vulnerability has been resolved:  netlink: prevent potential spectre v1 gadgets  M...

CVE-2023-53000 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53000, released March 27, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-53000
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 27, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  netlink: prevent potential spectre v1 gadgets  Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla()      u16 type = nla_type(nla);      if (type == 0 || type > maxtype) {         /* error or continue */     }  @type is then used as an array index and can be used as a Spectre v1 gadget.  array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users.  This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.11-1 | [DEBIAN-CVE-2023-53000](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53000.md) | Mar 27, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.11-1 | [DEBIAN-CVE-2023-53000](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53000.md) | Mar 27, 2025 |
| Linux | linux Debian 14 | 6.1.11-1 | [DEBIAN-CVE-2023-53000](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53000.md) | Mar 27, 2025 |

---

Data as of 2026-11-08T19:12:23Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.