Privilege Escalation Affecting torvalds/linux package, versions [,2.6.36.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006515
  • published26 Jan 2022
  • disclosed30 Dec 2010
  • creditUnknown

Introduced: 30 Dec 2010

CVE-2010-4258  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 2.6.36.2 or higher.

Overview

Affected versions of this package are vulnerable to Privilege Escalation. The do_exit function in kernel/exit.c in the Linux kernel before 2.6.36.2 does not properly handle a KERNEL_DS get_fs value, which allows local users to bypass intended access_ok restrictions, overwrite arbitrary kernel memory locations, and gain privileges by leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault, as demonstrated by vectors involving the clear_child_tid feature and the splice system call.

CVSS Scores

version 3.1