What’s Vulnerable › Vulnerabilities

CVE-2010-4074

• Severity: low (CVSS 1.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2010-11-29 · updated 2026-06-16
• Weakness: CWE-200

Description

The USB subsystem in the Linux kernel before 2.6.36-rc5 does not properly initialize certain structure members, which allows local users to obtain potentially sensitive information from kernel stack memory via vectors related to TIOCGICOUNT ioctl calls, and the (1) mos7720_ioctl function in drivers/usb/serial/mos7720.c and (2) mos7840_ioctl function in drivers/usb/serial/mos7840.c.

Affected products

• Debian Linux: 5.0
• Linux kernel: before 2.6.36; 2.6.36, 2.6.36-rc1, 2.6.36-rc2, 2.6.36-rc3, 2.6.36-rc4 — fixed in 2.6.36

How to fix

Upgrade to a fixed version: Linux kernel 2.6.36. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a0846f1868b11cd827bdfeaf4527d8b1b1c0b098
• http://lkml.org/lkml/2010/9/15/392
• http://secunia.com/advisories/42890
• http://www.debian.org/security/2010/dsa-2126
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.36/ChangeLog-2.6.36-rc5
• http://www.openwall.com/lists/oss-security/2010/09/25/2
• http://www.openwall.com/lists/oss-security/2010/10/06/6
• http://www.openwall.com/lists/oss-security/2010/10/07/1
• http://www.openwall.com/lists/oss-security/2010/10/25/3
• http://www.redhat.com/support/errata/RHSA-2010-0958.html
• http://www.redhat.com/support/errata/RHSA-2011-0007.html
• http://www.securityfocus.com/bid/45074

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