Advisories ยป MGASA-2013-0203

Updated kernel packages fix multiple security vulnerabilities

Publication date: 06 Jul 2013
Type: security
Affected Mageia releases : 2
CVE: CVE-2013-0231 , CVE-2013-2232 , CVE-2013-2234 , CVE-2013-2237 , CVE-2013-2850 , CVE-2013-2852


This kernel update provides the upstream 3.4.52 kernel and fixes
the following security issues:

The pciback_enable_msi function in the PCI backend driver 
(drivers/xen/pciback/conf_space_capability_msi.c) in Xen for the Linux
kernel 2.6.18 and 3.8 allows guest OS users with PCI device access to
cause a denial of service via a large number of kernel log messages.
(CVE-2013-0231 / XSA-43)

ipv6: ip6_sk_dst_check() must not assume ipv6 dst
It's possible to use AF_INET6 sockets and to connect to an IPv4
destination. After this, socket dst cache is a pointer to a rtable,
not rt6_info. This bug can be exploited by local non-root users
to trigger various corruptions/crashes (CVE-2013-2232)

af_key: fix info leaks in notify messages
key_notify_sa_flush() and key_notify_policy_flush() miss to
initialize the sadb_msg_reserved member of the broadcasted message
and thereby leak 2 bytes of heap memory to listeners (CVE-2013-2234)

af_key: initialize satype in key_notify_policy_flush()
key_notify_policy_flush() miss to nitialize the sadb_msg_satype member
of the broadcasted message and thereby leak heap memory to listeners

Heap-based buffer overflow in the iscsi_add_notunderstood_response function
in drivers/target/iscsi/iscsi_target_parameters.c in the iSCSI target
subsystem in the Linux kernel through 3.9.4 allows remote attackers to
cause a denial of service (memory corruption and OOPS) or possibly execute
arbitrary code via a long key that is not properly handled during
construction of an error-response packet.
A reproduction case requires patching open-iscsi to send overly large
keys. Performing discovery in a loop will Oops the remote server.

Format string vulnerability in the b43_request_firmware function in
drivers/net/wireless/b43/main.c in the Broadcom B43 wireless driver in
the Linux kernel through 3.9.4 allows local users to gain privileges by
leveraging root access and including format string specifiers in an
fwpostfix modprobe parameter, leading to improper construction of an
error message. (CVE-2013-2852)

Other fixes:
Fix up alx AR8161 breakage (mga #10079)

For other -stable fixes, read the referenced changelogs