Description (CNA)
NetBSD prior to commit ec8451e contains a signed integer overflow vulnerability in the cryptodev_op() function in sys/opencrypto/cryptodev.c where the local variable iov_len is declared as a signed int but assigned from an unsigned cop->dst_len value, causing undefined behavior when cop->dst_len exceeds INT_MAX. A local attacker with access to /dev/crypto and a compression session type can exploit this vulnerability by providing a dst_len value exceeding INT_MAX to trigger a kernel panic through NULL pointer dereference when CONFIG_SVS is disabled and corrupted UIO pointer arithmetic.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| NetBSD / src | affected 0 before ec8451efc1565516aba9e7047e1a1a1ce7953a2f |
CWE
CWE-190, CWE-476
References
- https://nasm.re/posts/uaf_netbsd_crypto/
- https://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2f
- https://www.vulncheck.com/advisories/netbsd-signed-integer-overflow-in-cryptodev-op-via-cryptodev-c
ADP enrichment
No English description supplied.
No references supplied.