CVE-2026-3591
Publication date 25 March 2026
Last updated 25 March 2026
Ubuntu priority
Description
A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| bind9 | 25.10 questing |
Fixed 1:9.20.11-1ubuntu2.2
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
|
| isc-dhcp | 25.10 questing |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
|
| bind9-libs | 25.10 questing | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
Notes
alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs
mdeslaur
in focal and jammy, isc-dhcp uses the bind9-libs package only affects 9.20+
References
Related Ubuntu Security Notices (USN)
- USN-8124-1
- Bind vulnerabilities
- 25 March 2026