| Name | CVE-2026-0915 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1125748 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| glibc (PTS) | bullseye | 2.31-13+deb11u11 | vulnerable |
| bullseye (security) | 2.31-13+deb11u13 | vulnerable |
| bookworm | 2.36-9+deb12u13 | vulnerable |
| bookworm (security) | 2.36-9+deb12u7 | vulnerable |
| trixie | 2.41-12+deb13u1 | vulnerable |
| forky, sid | 2.42-11 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| glibc | source | (unstable) | 2.42-8 | | | 1125748 |
Notes
[trixie] - glibc <no-dsa> (Minor issue)
[bookworm] - glibc <no-dsa> (Minor issue)
[bullseye] - glibc <postponed> (Minor issue, high attack complexity)
https://sourceware.org/bugzilla/show_bug.cgi?id=33802
https://www.openwall.com/lists/oss-security/2026/01/16/6
Introduced with: https://sourceware.org/git/?p=glibc.git;a=commit;h=5f0e6fc702296840d2daa39f83f6cb1e40073d58 (glibc-1.93)
Fixed by: https://sourceware.org/git/?p=glibc.git;a=commit;h=e56ff82d5034ec66c6a78f517af6faa427f65b0b (glibc-2.43)