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CVE-2011-0726

Date: July 18, 2011

The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.

Language: C

Severity Score

Related Resources (12)

https://people.canonical.com/~ubuntu-security/cve/CVE-2011-0726
https://lkml.org/lkml/2011/3/11/380
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3
http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1
http://www.spinics.net/lists/mm-commits/msg82726.html
https://access.redhat.com/security/cve/CVE-2011-0726
http://downloads.avaya.com/css/P8/documents/100145416
https://nvd.nist.gov/vuln/detail/CVE-2011-0726
https://bugzilla.redhat.com/show_bug.cgi?id=684569
http://www.securityfocus.com/bid/47791
http://rhn.redhat.com/errata/RHSA-2011-0833.html
https://www.mend.io/vulnerability-database/CVE-2011-0726

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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