Description
Multiple integer overflows in malloc/malloc.c in the GNU C Library (aka glibc or libc6) 2.18 and earlier allow context-dependent attackers to cause a denial of service (heap corruption) via a large value to the (1) pvalloc, (2) valloc, (3) posix_memalign, (4) memalign, or (5) aligned_alloc functions.
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 | 2.17-93 | — |
| Debian 13 | glibc | 2.17-93 | — |
| Debian 12 | glibc | 2.17-93 | — |
| Debian 6.0 | eglibc | 2.11.3-4+deb6u5 | DLA-165-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | nscd +7 | 2.12-1.132.el6 | RHSA-2013:1605 |
| RHEL 5 | nscd +6 | 2.5-118.el5_10.2 | RHSA-2013:1411 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.24-2.3 | openSUSE-SU-2024:10154-1 |
Advisories 4
- RHSA-2013:1605 Red Hat Security Advisory: glibc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2013:1411 Red Hat Security Advisory: glibc security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DLA-165-1 eglibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10154-1 glibc-2.24-2.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- RHSA-2013:1605 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4332
- 55113 third-party-advisory
- USN-1991-1 vendor-advisory
- [oss-security] 20130912 Re: CVE Request: Three integer overflows in glibc memory allocator mailing-list
- MDVSA-2013:284 vendor-advisory
- 62324 vdb-entry
- GLSA-201503-04 vendor-advisory
- RHSA-2013:1411 vendor-advisory
- MDVSA-2013:283 vendor-advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=15857
- https://sourceware.org/bugzilla/show_bug.cgi?id=15856
- https://sourceware.org/bugzilla/show_bug.cgi?id=15855