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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-10-19 20:51:10 +0800 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-10-23 09:35:48 +0200 |
| commit | 1137b5e2529a8f5ca8ee709288ecba3e68044df2 (patch) | |
| tree | 18edcb35fb0f74084d002b560f91fc9deb7a44e8 /net/sched | |
| parent | 10a7ef33679073d13bf1dd05e3f1b7912f999543 (diff) | |
| download | linux-1137b5e2529a8f5ca8ee709288ecba3e68044df2.tar.bz2 | |
ipsec: Fix aborted xfrm policy dump crash
An independent security researcher, Mohamed Ghannam, has reported
this vulnerability to Beyond Security's SecuriTeam Secure Disclosure
program.
The xfrm_dump_policy_done function expects xfrm_dump_policy to
have been called at least once or it will crash. This can be
triggered if a dump fails because the target socket's receive
buffer is full.
This patch fixes it by using the cb->start mechanism to ensure that
the initialisation is always done regardless of the buffer situation.
Fixes: 12a169e7d8f4 ("ipsec: Put dumpers on the dump list")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/sched')
0 files changed, 0 insertions, 0 deletions