Information exposure in Linux kernel - CVE-2010-4076

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Main Vulnerability Database Vulnerabilities #VU92583

Information exposure in Linux kernel - CVE-2010-4076

Published: November 29, 2010 / Updated: August 7, 2020


Vulnerability identifier: #VU92583
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2010-4076
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to information exposure error within the serial_tiocmset() function in drivers/usb/serial/usb-serial.c, within the uart_wait_modem_status(), uart_get_count() and uart_ioctl() functions in drivers/serial/serial_core.c, within the tty_tiocmset() and tty_ioctl() functions in drivers/char/tty_io.c. A local user can gain access to sensitive information.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-318-ec2 (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)

How to mitigate CVE-2010-4076

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 2.6.31-23.74, 2.6.32-34.77, 2.6.35-30.56
linux-image-2.6.32-318-ec2 (Ubuntu package) - update to 2.6.32-318.38
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-30.56~lucid1

External References

Related Security Bulletins