2632a233ba
Fix vulnerability to a denial-of-service attack which passes a
length-0 crypto op. Check for zero length and return EINVAL, taken from:
http://cvsweb.FreeBSD.org/src/sys/opencrypto/cryptodev.c.diff?r1=1.25&r2=1.26
Original FreeBSD log mesage:
Modified files:
sys/opencrypto cryptodev.c
Log:
Fix bogus check. It was possible to panic the kernel by giving 0 length.
This is actually a local DoS, as every user can use /dev/crypto if there
is crypto hardware in the system and cryptodev.ko is loaded (or compiled
into the kernel).
Reported by: Mike Tancsa <mike@sentex.net>
thanks to Sam Leffler for passing on a heads-up about this issue.
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|---|---|---|
| .. | ||
| Makefile | ||
| criov.c | ||
| crypto.c | ||
| cryptodev.c | ||
| cryptodev.h | ||
| cryptosoft.c | ||
| cryptosoft.h | ||
| deflate.c | ||
| deflate.h | ||
| files.opencrypto | ||
| xform.c | ||
| xform.h | ||