SB2015091708 - Ubuntu update for linux, linux-source-2.6.15

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Main Vulnerability Database SB2015091708

SB2015091708 - Ubuntu update for linux, linux-source-2.6.15

Published: September 17, 2015 Updated: October 31, 2026

Security Bulletin ID SB2015091708
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Privilege escalation (CVE-ID: CVE-2010-3081)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to improper allocation of userspace memory required for the 32-bit compatibility layer within compat_alloc_user_space() function in include/asm/compat.h file on on 64-bit platforms. A local user can call compat_mc_getsockopt() function and gain control over vulnerable system.

Successful exploitation of the vulnerability allows a local non-privileged user to gain root privileges.


2) Improper Privilege Management (CVE-ID: CVE-2010-3301)

CWE-ID: CWE-269 - Improper Privilege Management

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to the IA32 system call emulation functionality in arch/x86/ia32/ia32entry.S  on the x86_64 platform does not zero extend the %eax register after the 32-bit entry path to ptrace is used. A local user can use the %rax register to escalate privileges on the system.

Note, the vulnerability exists due to a CVE-2007-4573 regression.


Remediation

Install update from vendor's website.

References