On Thu, Dec 19, 2024 at 11:21 AM Nikolay Kuratov kniv@yandex-team.ru wrote:
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
net/sctp/associola.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
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)-- 2.34.1
Acked-by: Xin Long lucien.xin@gmail.com