CVE-2026-101341 Stack overwrite from specially formatted TXT-DATA RDATA field
HighCVSS 8.7
EPSS 0.34%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Tokens of text in RDATA (of for example TXT records) under 32 bytes are not checked to stay within the space reserved for the RDATA allowing for arbitrary sized out of bound stack writes, including an overwrite of a callback function pointer which is called directly after parse. Zone files which are written out by NSD itself, such for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| NLnet Labs NSD | >= 4.10.0, < 4.15.3 | 4.15.3 |
| debian/nsd(Debian:12) | All versions | No fix listed |
| debian/nsd(Debian:12) | = 4.10.1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.10.1~rc2-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.10.1~rc2-2 | No fix listed |
| debian/nsd(Debian:12) | = 4.11.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.11.1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.12.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.12.0-2 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-2 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-3 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-4 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-5 | No fix listed |
| debian/nsd(Debian:12) | = 4.13.0-6 | No fix listed |
| debian/nsd(Debian:12) | = 4.14.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.14.1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.14.2-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.14.3-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.0~rc1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.2-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.3-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.15.4-1 | No fix listed |
Show 48 more
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/nsd(Debian:12) | = 4.6.1-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.7.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.8.0-1 | No fix listed |
| debian/nsd(Debian:12) | = 4.9.1-1 | No fix listed |
| debian/nsd(Debian:13) | All versions | No fix listed |
| debian/nsd(Debian:13) | = 4.12.0-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.12.0-2 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-2 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-3 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-4 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-5 | No fix listed |
| debian/nsd(Debian:13) | = 4.13.0-6 | No fix listed |
| debian/nsd(Debian:13) | = 4.14.0-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.14.1-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.14.2-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.14.3-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.0-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.0~rc1-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.1-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.2-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.3-1 | No fix listed |
| debian/nsd(Debian:13) | = 4.15.4-1 | No fix listed |
| debian/nsd(Debian:14) | < 4.15.3-1 | 4.15.3-1 |
| debian/nsd(Debian:14) | = 4.12.0-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.12.0-2 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-2 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-3 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-4 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-5 | No fix listed |
| debian/nsd(Debian:14) | = 4.13.0-6 | No fix listed |
| debian/nsd(Debian:14) | = 4.14.0-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.14.1-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.14.2-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.14.3-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.15.0-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.15.0~rc1-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.15.1-1 | No fix listed |
| debian/nsd(Debian:14) | = 4.15.2-1 | No fix listed |
| ubuntu/nsd(Ubuntu:22.04) | All versions | No fix listed |
| alpine/nsd(Alpine:v3.21) | < 4.11.1-r1 | 4.11.1-r1 |
| alpine/nsd(Alpine:v3.22) | < 4.12.0-r1 | 4.12.0-r1 |
| alpine/nsd(Alpine:v3.23) | < 4.13.0-r1 | 4.13.0-r1 |
| alpine/nsd(Alpine:v3.24) | < 4.14.3-r1 | 4.14.3-r1 |
| ubuntu/nsd(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/nsd(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/nsd(Ubuntu:26.10) | All versions | No fix listed |
References
- Red Hat CVE page vendor-advisory
- Red Hat Bugzilla 2552141 issue-tracking
- www.cve.org
- nvd.nist.gov
- www.nlnetlabs.nl vendor-advisory
- Debian Security Tracker CVE-2026-101341 vendor-advisory
- Ubuntu CVE tracker vendor-advisory
- security.alpinelinux.org vendor-advisory
- bugs.debian.org issue-tracking