af_key: Add lock to key dump

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commit 89e357d83c upstream.

A dump may come in the middle of another dump, modifying its dump
structure members. This race condition will result in NULL pointer
dereference in kernel. So add a lock to prevent that race.

Fixes: 83321d6b98 ("[AF_KEY]: Dump SA/SP entries non-atomically")
Signed-off-by: Yuejie Shi <syjcnss@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Yuejie Shi 2017-03-31 15:10:20 +08:00 • committed by Greg Kroah-Hartman

parent efcfbfb1d8

commit 0f94b36de3

1 changed files with 38 additions and 8 deletions

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net/key/af_key.c

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