CVE-2010-4163

Severity: medium (CVSS 4.7 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: 2011-01-03 · updated 2026-06-16
Weakness: CWE-20

Description

The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 2.6.36.2 allows local users to cause a denial of service (panic) via a zero-length I/O request in a device ioctl to a SCSI device.

Affected products

Linux kernel: before 2.6.36.2 — fixed in 2.6.36.2
Opensuse: 11.2, 11.3
SUSE Linux Enterprise Server 15 SP1: 11-sp1
SUSE Linux Enterprise Real Time Extension: 11-sp1
SUSE Linux Enterprise Server: 11-sp1

How to fix

Upgrade to a fixed version: Linux kernel 2.6.36.2. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9284bcf4e335e5f18a8bc7b26461c33ab60d0689
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://openwall.com/lists/oss-security/2010/11/10/18
http://openwall.com/lists/oss-security/2010/11/12/2
http://openwall.com/lists/oss-security/2010/11/29/1
http://secunia.com/advisories/42778
http://secunia.com/advisories/42801
http://secunia.com/advisories/42890
http://secunia.com/advisories/42932

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