Davide Caratti 13de4ed9e3 net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl
skb_mpls_dec_ttl() reads the LSE without ensuring that it is contained in
the skb "linear" area. Fix this calling pskb_may_pull() before reading the
current ttl.

Found by code inspection.

Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/r/53659f28be8bc336c113b5254dc637cc76bbae91.1606987074.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-03 11:13:21 -08:00
2020-10-13 13:04:41 -07:00
2020-12-03 10:59:29 -08:00
2020-11-27 12:56:04 -08:00
2020-11-27 10:38:36 -08:00
2020-11-27 10:38:36 -08:00
2020-11-14 12:04:02 -08:00
2020-11-19 19:56:29 +01:00
2020-10-17 11:18:18 -07:00
2020-11-27 11:04:13 -08:00
2020-11-13 13:16:27 +01:00
2020-12-03 10:59:29 -08:00
2020-11-22 15:36:08 -08:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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Linux kernel stable tree
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