PT-2012-1537 · Linux · Linux Kernel

Denys Fedoryshchenko · Published 2012-06-13 · Updated 2023-02-13 · CVE-2011-1927

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.39

Description The issue is related to the ip expire function in the Linux kernel, which does not properly construct ICMP TIME EXCEEDED packets after a timeout. This allows remote attackers to cause a denial of service via crafted fragmented packets, resulting in an invalid pointer dereference.

Recommendations For versions prior to 2.6.39, update to version 2.6.39 or later to resolve the issue.

Exploit

Fix

Related Identifiers

CVE-2011-1927

Affected Products

Linux Kernel

References · 5

• 🔥 https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2011-1927 · Security Note
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=64f3b9e203bd06855072e295557dca1485a2ecba · Note
• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 · Note
• http://openwall.com/lists/oss-security/2011/05/18/2 · Note