Description
A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ISC | BIND 9 | BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bind9 | 1:9.11.5.P4+dfsg-1 | — |
| Debian 13 | bind9 | 1:9.11.5.P4+dfsg-1 | — |
| Debian 12 | bind9 | 1:9.11.5.P4+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | bind9 | 1:9.11.3+dfsg-1ubuntu1.5 | USN-3893-1 |
| Ubuntu 16.04 LTS | bind9 | 1:9.10.3.dfsg.P4-8ubuntu1.12 | USN-3893-1 |
| Ubuntu 14.04 LTS | bind9 | 1:9.9.5.dfsg-3ubuntu0.19 | USN-3893-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.23 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.22 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.21 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.20 | bind | 9.12.3_p4-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.18 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.17 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.16 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.15 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.14 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.13 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.12 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.11 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.10 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.9 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.8 | bind | 9.12.3_p4-r0 | — |
| Alpine v3.7 | bind | 9.11.5_p4-r0 | — |
| Alpine v3.6 | bind | 9.11.5_p4-r0 | — |
Advisories 2
- USN-3893-1 bind9 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- WID-SEC-2025-1194 Internet Systems Consortium BIND: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2025