CVE-2026-0915
Publication date 15 January 2026
Last updated 4 February 2026
Ubuntu priority
Description
Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| eglibc | 25.10 questing | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 14.04 LTS trusty |
Vulnerable
|
|
| glibc | 25.10 questing |
Fixed 2.42-0ubuntu3.1
|
| 24.04 LTS noble |
Fixed 2.39-0ubuntu8.7
|
|
| 22.04 LTS jammy |
Fixed 2.35-0ubuntu3.13
|
|
| 20.04 LTS focal |
Fixed 2.31-0ubuntu9.18+esm1
|
|
| 18.04 LTS bionic |
Fixed 2.27-3ubuntu1.6+esm6
|
|
| 16.04 LTS xenial |
Fixed 2.23-0ubuntu11.3+esm9
|
Get expanded security coverage with Ubuntu Pro
Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.
Get Ubuntu Pro 30-day free trialSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-8005-1
- GNU C Library vulnerabilities
- 3 February 2026