An updated Linux kernel has been released for Debian 7 LTS:
DLA 1392-1: linux security update

Debian 7 LTS has reached it's end of life. However, a subset of packages will be still supported as part of Extended LTS support:
DLA 1393-1: Debian 7 Long Term Support reaching end-of-life

DLA 1392-1: linux security update

Package : linux
Version : 3.2.102-1
CVE ID : CVE-2018-1093 CVE-2018-1130 CVE-2018-8897 CVE-2018-10940
Debian Bug : 898100

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service.

CVE-2018-1093

Wen Xu reported that a crafted ext4 filesystem image could trigger
an out-of-bounds read in the ext4_valid_block_bitmap() function. A
local user able to mount arbitrary filesystems could use this for
denial of service.

CVE-2018-1130

The syzbot software found that the DCCP implementation of
sendmsg() does not check the socket state, potentially leading
to a null pointer dereference. A local user could use this to
cause a denial of service (crash).

CVE-2018-8897

Nick Peterson of Everdox Tech LLC discovered that #DB exceptions
that are deferred by MOV SS or POP SS are not properly handled,
allowing an unprivileged user to crash the kernel and cause a
denial of service.

CVE-2018-10940

Dan Carpenter reported that the cdrom driver does not correctly
validate the parameter to the CDROM_MEDIA_CHANGED ioctl. A user
with access to a cdrom device could use this to cause a denial of
service (crash).

For Debian 7 "Wheezy", these problems have been fixed in version
3.2.102-1. This version also includes bug fixes from upstream version
3.2.102, including a fix for a regression in the SCTP implementation
in version 3.2.101.

We recommend that you upgrade your linux packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

DLA 1393-1: Debian 7 Long Term Support reaching end-of-life

The Debian Long Term Support (LTS) Team hereby announces that Debian 7
"Wheezy" support has reached its end-of-life on May 31, 2018,
five years after its initial release on May 4, 2013.

Debian will not provide further security updates for Debian 7. A
subset of Wheezy packages will be supported by external parties.
Detailed information can be found at [Extended LTS].

The LTS Team will prepare the transition to Debian 8 "Jessie", which
is the current oldstable release. The LTS team will take over support
from the Security Team on June 17, 2018.

Debian 8 will also receive Long Term Support for five years after its
initial release with support ending on June 30, 2020. The supported
architectures include amd64, i386, armel and armhf.

For further information about using Jessie LTS and upgrading from Wheezy
LTS, please refer to [LTS/Using].

Debian and its LTS Team would like to thank all contributing users,
developers and sponsors who are making it possible to extend the life
of previous stable releases, and who have made this LTS a success.

If you rely on Debian LTS, please consider [joining the team],
providing patches, testing or [funding the efforts].

More information about Debian Long Term Support can be found at
https://wiki.debian.org/LTS/.

[Extended LTS] https://wiki.debian.org/LTS/Extended
[LTS/Using] https://wiki.debian.org/LTS/Using
[joining the team] https://wiki.debian.org/LTS/Development
[funding the efforts] https://wiki.debian.org/LTS/Funding