Debian Long Term Support / LTS Security Information / 2015 / Security Information -- DLA-360-1 linux-2.6

Debian Security Advisory

DLA-360-1 linux-2.6 -- LTS security update

Date Reported:

08 Dec 2015

Affected Packages:

linux-2.6

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2013-7446, CVE-2015-7799, CVE-2015-7833, CVE-2015-7990, CVE-2015-8324.

More information:

This update fixes the CVEs described below.

• CVE-2013-7446

  Dmitry Vyukov discovered that a particular sequence of valid operations on local (AF_UNIX) sockets can result in a use-after-free. This may be used to cause a denial of service (crash) or possibly for privilege escalation.

• CVE-2015-7799

  郭永刚 discovered that a user granted access to /dev/ppp can cause a denial of service (crash) by passing invalid parameters to the PPPIOCSMAXCID ioctl. This also applies to ISDN PPP device nodes.

• CVE-2015-7833

  Sergej Schumilo, Hendrik Schwartke and Ralf Spenneberg discovered a flaw in the processing of certain USB device descriptors in the usbvision driver. An attacker with physical access to the system can use this flaw to crash the system.

• CVE-2015-7990

  It was discovered that the fix for CVE-2015-6937 was incomplete. A race condition when sending a message on unbound socket can still cause a NULL pointer dereference. A remote attacker might be able to cause a denial of service (crash) by sending a crafted packet.

• CVE-2015-8324

  Valintinr reported that an attempt to mount a corrupted ext4 filesystem may result in a kernel panic. A user permitted to mount filesystems could use this flaw to crash the system.

For the oldoldstable distribution (squeeze), these problems have been fixed in version 2.6.32-48squeeze17. We recommend that you upgrade your linux-2.6 packages.

For the oldstable (wheezy) and stable (jessie) distributions, CVE-2015-7833, CVE-2015-7990 and CVE-2015-8324 have been fixed and the other issues will be fixed soon.