OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path starting with 10,9.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openbsd | Openbsd | 5.8 (including) | 5.8 (including) |
| Openbsd | Openbsd | 5.9 (including) | 5.9 (including) |
Potential Mitigations
References
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/kern/vfs_subr.c.diff?r1=1.248\u0026r2=1.249
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/tmpfs/tmpfs_vfsops.c.diff?r1=1.9\u0026r2=1.10
- http://www.openwall.com/lists/oss-security/2016/07/26/6
- http://www.openwall.com/lists/oss-security/2016/07/26/8
- http://www.securityfocus.com/bid/92140
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/kern/vfs_subr.c.diff?r1=1.248\u0026r2=1.249
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/tmpfs/tmpfs_vfsops.c.diff?r1=1.9\u0026r2=1.10
- http://www.openwall.com/lists/oss-security/2016/07/26/6
- http://www.openwall.com/lists/oss-security/2016/07/26/8
- http://www.securityfocus.com/bid/92140