SB2011011301 - Multiple vulnerabilities in Linux kernel

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Out-of-bounds write (CVE-ID: CVE-2010-4656)

The vulnerability allows a local authenticated user to execute arbitrary code.

The iowarrior_write function in drivers/usb/misc/iowarrior.c in the Linux kernel before 2.6.37 does not properly allocate memory, which might allow local users to trigger a heap-based buffer overflow, and consequently cause a denial of service or gain privileges, via a long report.

2) Integer underflow (CVE-ID: CVE-2010-4529)

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Integer underflow in the irda_getsockopt function in net/irda/af_irda.c in the Linux kernel before 2.6.37 on platforms other than x86 allows local users to obtain potentially sensitive information from kernel heap memory via an IRLMP_ENUMDEVICES getsockopt call.

Remediation

Install update from vendor's website.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3ed780117dbe5acb64280d218f0347f238dafed0
• http://openwall.com/lists/oss-security/2011/01/24/9
• http://openwall.com/lists/oss-security/2011/01/25/3
• http://openwall.com/lists/oss-security/2011/01/25/4
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
• http://www.securityfocus.com/bid/46069
• http://www.ubuntu.com/usn/USN-1146-1
• https://bugzilla.redhat.com/show_bug.cgi?id=672420
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdac1e0697356ac212259f2147aa60c72e334861
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
• http://openwall.com/lists/oss-security/2010/12/23/1
• http://openwall.com/lists/oss-security/2011/01/03/1
• http://secunia.com/advisories/42684
• http://secunia.com/advisories/43291
• http://www.securityfocus.com/bid/45556
• http://www.spinics.net/lists/netdev/msg150842.html
• http://www.vupen.com/english/advisories/2011/0375