CVE-2012-6536

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-03-15 · updated 2026-06-16
Weakness: CWE-200

Description

net/xfrm/xfrm_user.c in the Linux kernel before 3.6 does not verify that the actual Netlink message length is consistent with a certain header field, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability and providing a (1) new or (2) updated state.

Affected products

Linux kernel: through 3.5.7; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+183)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ecd7918745234e423dd87fcc0c077da557909720
http://www.openwall.com/lists/oss-security/2013/03/05/13
https://github.com/torvalds/linux/commit/ecd7918745234e423dd87fcc0c077da557909720
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ecd7918745234e423dd87fcc0c077da557909720
http://www.openwall.com/lists/oss-security/2013/03/05/13
https://github.com/torvalds/linux/commit/ecd7918745234e423dd87fcc0c077da557909720
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2

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