Description
scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.
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 | 2.15 | — |
| Debian 13 | glibc | 2.15 | — |
| Debian 12 | glibc | 2.15 | — |
| Debian 6.0 | eglibc | 2.11.3-4+deb6u5 | DLA-165-1 |
Advisories 2
- WID-SEC-2026-2751 IBM InfoSphere Guardium: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- DLA-165-1 eglibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://sourceware.org/git/?p=glibc.git%3Ba=commitdiff%3Bh=20b38e0
- https://sourceware.org/bugzilla/show_bug.cgi?id=13138#c4
- https://marc.info/?l=gimp-developer&m=129567990905823&w=2
- [oss-security] 20150312 Re: CVE request: glibc scanf implementation crashes on certain inputs mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1196745
- https://sourceware.org/git/?p=glibc.git%3Ba=commitdiff%3Bh=3f8cc204fdd0