Description
res_query in libresolv in glibc before 2.25 allows remote attackers to cause a denial of service (NULL pointer dereference and process crash).
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 | glibc | 2.24-9 | — |
| Debian 13 | glibc | 2.24-9 | — |
| Debian 12 | glibc | 2.24-9 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | glibc | 2.23-0ubuntu6 | USN-3239-1 |
| Ubuntu 14.04 LTS | eglibc | 2.19-0ubuntu6.10 | USN-3239-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | glibc | No fix yet | — |
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nscd +7 | 2.17-222.el7 | RHSA-2018:0805 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | glibc | 2.22-100.15.4 | SUSE-SU-2019:1716-1 |
| SLES 12 SP3 | glibc | 2.22-126.1 | SUSE-SU-2022:2886-1 |
| SLES 12 SP2 | glibc | 2.22-126.1 | SUSE-SU-2022:2886-1 |
| SLES 11 SP4 | glibc | 2.11.3-17.110.19.2 | SUSE-SU-2018:2883-1 |
| SLES 11 SP3 | glibc | 2.11.3-17.110.19.2 | SUSE-SU-2018:2883-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | glibc | 2.22-100.15.4 | SUSE-SU-2019:1716-1 |
| SLES for SAP 11 SP4 | glibc | 2.11.3-17.110.19.2 | SUSE-SU-2018:2883-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | glibc | 2.11.3-17.110.19.2 | SUSE-SU-2018:2883-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.34-1.2 | openSUSE-SU-2024:10792-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nscd +6 | 2.17-222.el7 | ELSA-2018-0805 |
Advisories 7
- RHSA-2018:0805 Red Hat Security Advisory: glibc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3239-1 eglibc, glibc vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2018:2883-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1716-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10792-1 glibc-2.34-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2886-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2018-0805 Moderate: glibc security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 16, 2018
References
- https://sourceware.org/bugzilla/attachment.cgi?id=8492
- https://bugzilla.redhat.com/show_bug.cgi?id=1249603
- https://sourceware.org/bugzilla/show_bug.cgi?id=18784
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=fc82b0a2dfe7dbd35671c10510a8da1043d746a5
- USN-3239-1 vendor-advisory
- [libc-alpha@sourceware.org] 20170205 The GNU C Library version 2.25 is now available mailing-list
- USN-3239-2 vendor-advisory
- GLSA-201706-19 vendor-advisory
- 99324 vdb-entry
- RHSA-2018:0805 vendor-advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html