CVE-2012-2674

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% 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) chk_malloc, (2) leak_malloc, and (3) leak_memalign functions in libc/bionic/malloc_debug_leak.c in Bionic (libc) for Android, when libc.debug.malloc is set, 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

Google Bionic: all versions

References

http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
http://www.openwall.com/lists/oss-security/2012/06/05/1
http://www.openwall.com/lists/oss-security/2012/06/07/13
https://github.com/android/platform_bionic/commit/7f5aa4f35e23fd37425b3a5041737cdf58f87385
http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
http://www.openwall.com/lists/oss-security/2012/06/05/1
http://www.openwall.com/lists/oss-security/2012/06/07/13
https://github.com/android/platform_bionic/commit/7f5aa4f35e23fd37425b3a5041737cdf58f87385

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