Multiple integer signedness errors in smb_subr.c in the netsmb module in the kernel in NetBSD 5.0.2 and earlier, FreeBSD, and Apple Mac OS X allow local users to cause a denial of service (panic) via a negative size value in a /dev/nsmb ioctl operation, as demonstrated by a (1) SMBIOC_LOOKUP or (2) SMBIOC_OPENSESSION ioctl call.
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[oss-security] 20100716 Re: CVE request: NetSMB BSD kernel module (minor)
[oss-security] 20100712 CVE request: NetSMB BSD kernel module (minor)