CVE-2010-2530

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-09-29 · updated 2026-06-16
Weakness: CWE-189

Description

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.

Affected products

macOS: all versions
FreeBSD: all versions
Netbsd: through 5.0.2; 0.8, 0.9, 1.0, 1.1, 1.2, 1.2.1 (+33)

References

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/netsmb/smb_subr.c.diff?r1=1.34&r2=1.35&only_with_tag=MAIN&f=h
http://www.openwall.com/lists/oss-security/2010/07/12/6
http://www.openwall.com/lists/oss-security/2010/07/16/2
http://www.securityfocus.com/bid/41557
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/netsmb/smb_subr.c.diff?r1=1.34&r2=1.35&only_with_tag=MAIN&f=h
http://www.openwall.com/lists/oss-security/2010/07/12/6
http://www.openwall.com/lists/oss-security/2010/07/16/2
http://www.securityfocus.com/bid/41557

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