Description
The xdr_bytes and xdr_string functions in the GNU C Library (aka glibc or libc6) 2.25 mishandle failures of buffer deserialization, which allows remote attackers to cause a denial of service (virtual memory allocation, or memory consumption if an overcommit setting is not used) via a crafted UDP packet to port 111, a related issue to CVE-2017-8779. NOTE: [Information provided from upstream and references
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | glibc | 2.22-62.6.2 | SUSE-SU-2018:0451-1 |
| SLES 12 SP2 | glibc | 2.22-62.6.2 | SUSE-SU-2018:0451-1 |
| SLES 11 SP4 | glibc | 2.11.3-17.110.6.2 | SUSE-SU-2018:0565-1 |
| SLES 11 SP3 | glibc | 2.11.3-17.110.6.2 | SUSE-SU-2018:0565-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | glibc | 2.22-62.6.2 | SUSE-SU-2018:0451-1 |
| SLES for SAP 12 SP2 | glibc | 2.22-62.6.2 | SUSE-SU-2018:0451-1 |
| SLES for SAP 11 SP4 | glibc | 2.11.3-17.110.6.2 | SUSE-SU-2018:0565-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | glibc | 2.11.3-17.110.6.2 | SUSE-SU-2018:0565-1 |
Advisories 2
- SUSE-SU-2018:0451-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0565-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://bugzilla.suse.com/show_bug.cgi?id=1037559#c7
- https://sourceware.org/ml/libc-alpha/2017-05/msg00105.html
- 98339 vdb-entry
- https://sourceware.org/bugzilla/show_bug.cgi?id=21461
- http://www.openwall.com/lists/oss-security/2017/05/05/2
- SUSE-SU-2018:0565 vendor-advisory
- openSUSE-SU-2018:0494 vendor-advisory
- SUSE-SU-2018:0451 vendor-advisory
- https://sourceware.org/legacy-ml/libc-alpha/2017-05/msg00128.html
- https://sourceware.org/legacy-ml/libc-alpha/2017-05/msg00129.html
- https://seclists.org/oss-sec/2017/q2/228