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| author | Nikolay Kuratov <kniv@yandex-team.ru> | 2024-12-19 19:21:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-09 13:32:07 +0100 |
| commit | 271f031f4c31c07e2a85a1ba2b4c8e734909a477 (patch) | |
| tree | 1078de28c0c14846a1bec2a71c32a23b0b28abd8 | |
| parent | b32c3b748d29eb1fcc9463f903b3540dccd5c887 (diff) | |
| download | linux-271f031f4c31c07e2a85a1ba2b4c8e734909a477.tar.gz linux-271f031f4c31c07e2a85a1ba2b4c8e734909a477.tar.bz2 linux-271f031f4c31c07e2a85a1ba2b4c8e734909a477.zip | |
net/sctp: Prevent autoclose integer overflow in sctp_association_init()
commit 4e86729d1ff329815a6e8a920cb554a1d4cb5b8d upstream.
While by default max_autoclose equals to INT_MAX / HZ, one may set
net.sctp.max_autoclose to UINT_MAX. There is code in
sctp_association_init() that can consequently trigger overflow.
Cc: stable@vger.kernel.org
Fixes: 9f70f46bd4c7 ("sctp: properly latch and use autoclose value from sock to association")
Signed-off-by: Nikolay Kuratov <kniv@yandex-team.ru>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20241219162114.2863827-1-kniv@yandex-team.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/sctp/associola.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index c45c192b7878..0b0794f164cf 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -137,7 +137,8 @@ static struct sctp_association *sctp_association_init( = 5 * asoc->rto_max; asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay; - asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] = sp->autoclose * HZ; + asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] = + (unsigned long)sp->autoclose * HZ; /* Initializes the timers */ for (i = SCTP_EVENT_TIMEOUT_NONE; i < SCTP_NUM_TIMEOUT_TYPES; ++i) |