SUSE-SU-2015:1489-1: important: Live patch for the Linux Kernel

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Live patch for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2015:1489-1
Rating:             important
References:         #902349 #916225 #939044 #939240 #939241 #939260 
                    #939262 #939263 #939270 #939273 #939276 #939277 
                    
Cross-References:   CVE-2014-3687 CVE-2014-7822 CVE-2014-8159
                    CVE-2014-9710 CVE-2015-1465 CVE-2015-1805
                    CVE-2015-3331 CVE-2015-3339 CVE-2015-3636
                    CVE-2015-4700 CVE-2015-5364 CVE-2015-5366
                   
Affected Products:
                    SUSE Linux Enterprise Live Patching 12
______________________________________________________________________________

   An update that fixes 12 vulnerabilities is now available.

Description:


   This update contains a kernel live patch for the 3.12.32-33 SUSE Linux
   Enterprise Server 12 Kernel, fixing following security issues.

   - CVE-2015-3339: A race condition in the prepare_binprm function in
     fs/exec.c in the Linux kernel allowed local users to gain privileges by
     executing a setuid program at a time instant when a chown to root is in
     progress, and the ownership is changed but the setuid bit is not yet
     stripped. (bsc#939263 bsc#939044)

   - CVE-2015-1465: The IPv4 implementation in the Linux kernel did not
     properly consider the length of the Read-Copy Update (RCU) grace period
     for redirecting lookups in the absence of caching, which allowed remote
     attackers to cause a denial of service (memory consumption or system
     crash) via a flood of packets. (bsc#939044 bsc#916225)

   - CVE-2015-3636: The ping_unhash function in net/ipv4/ping.c in the Linux
     kernel did not initialize a certain list data structure during an unhash
     operation, which allowed local users to gain privileges or cause a
     denial of service (use-after-free and system crash) by leveraging the
     ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP
     or IPPROTO_ICMPV6 protocol, and then making a connect system call after
      a disconnect. (bsc#939277)

   - CVE-2015-5364/CVE-2015-5366: Two denial of service attacks via a flood
     of UDP packets with invalid checksums were fixed that could be used by
      remote attackers to delay execution. (bsc#939276)

   - CVE-2015-1805: The (1) pipe_read and (2) pipe_write implementations in
     fs/pipe.c in the Linux kernel did not properly consider the side effects
     of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls,
      which allowed local users to cause a denial of service (system crash)
     or possibly gain privileges via a crafted application, aka an "I/O
      vector array overrun." (bsc#939270)

   - CVE-2015-4700: A BPF Jit optimization flaw could allow local users to
     panic the kernel. (bsc#939273)

   - CVE-2014-9710: The Btrfs implementation in the Linux kernel did not
     ensure that the visible xattr state is consistent with a requested
     replacement, which allowed local users to bypass intended ACL settings
     and gain privileges via standard filesystem operations (1) during an
     xattr-replacement time window, related to a race condition, or (2) after
     an xattr-replacement attempt that fails because the data does not fit.
     (bsc#939260)

   - CVE-2014-3687: The sctp_assoc_lookup_asconf_ack function in
     net/sctp/associola.c in the SCTP implementation in the Linux kernel
     allowed remote attackers to cause a denial of service (panic) via
     duplicate ASCONF chunks that trigger an incorrect uncork within the
     side-effect interpreter. (bsc#902349 bsc#939044)

   - CVE-2015-3331: The __driver_rfc4106_decrypt function in
     arch/x86/crypto/aesni-intel_glue.c in the Linux kernel did not properly
     determine the memory locations used for encrypted data, which allowed
     context-dependent attackers to cause a denial of service (buffer
     overflow and system crash) or possibly execute arbitrary code by
     triggering a crypto API call, as demonstrated by use of a libkcapi test
     program with an AF_ALG(aead) socket. (bsc#939262)

   - CVE-2014-8159: The InfiniBand (IB) implementation in the Linux kernel
     did not properly restrict use of User Verbs for registration of memory
     regions, which allowed local users to access arbitrary physical memory
     locations, and consequently cause a denial of service (system crash)
     or gain privileges, by leveraging permissions on a uverbs device under
      /dev/infiniband/. (bsc#939241)

   - CVE-2014-7822: The implementation of certain splice_write file
     operations in the Linux kernel before 3.16 does not enforce a restriction
     on the maximum size of a single file, which allows local users to cause
      a denial of service (system crash) or possibly have unspecified other
      impact via a crafted splice system call, as demonstrated by use of a
      file descriptor associated with an ext4 filesystem. (bsc#939240)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Live Patching 12:

      zypper in -t patch SUSE-SLE-Live-Patching-12-2015-484=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Live Patching 12 (x86_64):

      kgraft-patch-3_12_32-33-default-3-2.1
      kgraft-patch-3_12_32-33-xen-3-2.1


References:

   https://www.suse.com/security/cve/CVE-2014-3687.html
   https://www.suse.com/security/cve/CVE-2014-7822.html
   https://www.suse.com/security/cve/CVE-2014-8159.html
   https://www.suse.com/security/cve/CVE-2014-9710.html
   https://www.suse.com/security/cve/CVE-2015-1465.html
   https://www.suse.com/security/cve/CVE-2015-1805.html
   https://www.suse.com/security/cve/CVE-2015-3331.html
   https://www.suse.com/security/cve/CVE-2015-3339.html
   https://www.suse.com/security/cve/CVE-2015-3636.html
   https://www.suse.com/security/cve/CVE-2015-4700.html
   https://www.suse.com/security/cve/CVE-2015-5364.html
   https://www.suse.com/security/cve/CVE-2015-5366.html
   https://bugzilla.suse.com/902349
   https://bugzilla.suse.com/916225
   https://bugzilla.suse.com/939044
   https://bugzilla.suse.com/939240
   https://bugzilla.suse.com/939241
   https://bugzilla.suse.com/939260
   https://bugzilla.suse.com/939262
   https://bugzilla.suse.com/939263
   https://bugzilla.suse.com/939270
   https://bugzilla.suse.com/939273
   https://bugzilla.suse.com/939276
   https://bugzilla.suse.com/939277