ALPINE-CVE-2026-5947
ALPINE-CVE-2026-5947
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
CVSS 5.9 · Medium · Fix available
- Published
- Updated
Stack: system
Affected products and versions
bind Alpine:v3.20
- Affected ranges
- ECOSYSTEM: ≥ 9.20.0, < 9.18.49-r0
Update to 9.18.49-r0
bind Alpine:v3.21
- Affected ranges
- ECOSYSTEM: ≥ 9.20.0, < 9.18.49-r0
Update to 9.18.49-r0
bind Alpine:v3.22
- Affected ranges
- ECOSYSTEM: ≥ 9.20.0, < 9.20.23-r0
Update to 9.20.23-r0
bind Alpine:v3.23
- Affected ranges
- ECOSYSTEM: ≥ 9.20.0, < 9.20.23-r0
Update to 9.20.23-r0
bind Alpine:v3.24
- Affected ranges
- ECOSYSTEM: ≥ 9.20.0, < 9.20.23-r0
Update to 9.20.23-r0