# OPENSUSE-SU-2026:21502-1: nsd security update

OPENSUSE-SU-2026:21502-1, released July 29, 2026, fixes 4 CVEs in nsd (version 4.14.3-bp160.1.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21502-1
- Platform: Linux
- Released: Jul 29, 2026
- Priority: High (Closes CVE-2026-12244, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21502-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [nsd](https://patchblox.com/security/data/product/linux/nsd.md) | opensuse-leap 16.0 | 4.14.3-bp160.1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-12244](https://patchblox.com/security/data/cve/CVE-2026-12244.md) | High | nsd: If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS me... | 8.8 | 0.0049 |  |
| [CVE-2026-12245](https://patchblox.com/security/data/cve/CVE-2026-12245.md) | High | nsd: NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the se... | 7.5 | 0.0046 |  |
| [CVE-2026-12246](https://patchblox.com/security/data/cve/CVE-2026-12246.md) | High | nsd: NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the... | 8.1 | 0.0044 |  |
| [CVE-2026-12490](https://patchblox.com/security/data/cve/CVE-2026-12490.md) | High | nsd: When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certifica... | 7.5 | 0.0022 |  |

---

Data as of 2026-11-10T20:03:11Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo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.