CVE-2011-2695

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.

• CWE-193

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f17722f917b2f21497deb6edc62fb1683daa08e6
• http://secunia.com/advisories/45193Third Party Advisory
• http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5Broken Link
• http://www.openwall.com/lists/oss-security/2011/07/15/7Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2011/07/15/8Mailing List, Third Party Advisory
• http://www.spinics.net/lists/linux-ext4/msg25697.htmlExploit, Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=722557Issue Tracking, Patch, Third Party Advisory
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f17722f917b2f21497deb6edc62fb1683daa08e6
• http://secunia.com/advisories/45193Third Party Advisory
• http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5Broken Link
• http://www.openwall.com/lists/oss-security/2011/07/15/7Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2011/07/15/8Mailing List, Third Party Advisory
• http://www.spinics.net/lists/linux-ext4/msg25697.htmlExploit, Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=722557Issue Tracking, Patch, Third Party Advisory

Published

Jul 28, 2011

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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