CVE-2012-2673

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-07-25 · updated 2026-06-16
Weakness: CWE-189

Description

Multiple integer overflows in the (1) GC_generic_malloc and (2) calloc functions in malloc.c, and the (3) GC_generic_malloc_ignore_off_page function in mallocx.c in Boehm-Demers-Weiser GC (libgc) before 7.2 make it easier for context-dependent attackers to perform memory-related attacks such as buffer overflows via a large size value, which causes less memory to be allocated than expected.

Affected products

Boehm-Demers-Weiser Garbage Collector: through 7.2; 1.3, 1.4, 1.5, 1.8, 1.9, 2.0 (+88)

References

http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082926.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082988.html
http://rhn.redhat.com/errata/RHSA-2013-1500.html
http://rhn.redhat.com/errata/RHSA-2014-0149.html
http://rhn.redhat.com/errata/RHSA-2014-0150.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:158
http://www.openwall.com/lists/oss-security/2012/06/05/1
http://www.openwall.com/lists/oss-security/2012/06/07/13
http://www.securityfocus.com/bid/54227
http://www.ubuntu.com/usn/USN-1546-1
https://github.com/ivmai/bdwgc/blob/master/ChangeLog

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