PT-2015-7565 · Linux+3 · Linux Kernel+3

Dmitry Vyukov · Published 2015-12-30 · Updated 2024-06-15 · CVE-2015-7550

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.3.4

Description The issue is related to the keyctl read key function in the Linux kernel, which does not properly use a semaphore. This allows local users to cause a denial of service, resulting in a NULL pointer dereference and system crash, or possibly have other unspecified impacts. The issue can be triggered by a crafted application that leverages a race condition between keyctl revoke and keyctl read calls.

Recommendations For Linux kernel versions prior to 4.3.4, update to version 4.3.4 or later to resolve the issue.

Exploit

Fix

DoS

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2016-1018

ALT-PU-2016-1485

CVE-2015-7550

DLA-378-1

DSA-3434-1

MGASA-2016-0225

MGASA-2016-0232

MGASA-2016-0233

OPENSUSE-SU-2016_0280-1

OPENSUSE-SU-2016_0301-1

OPENSUSE-SU-2016_0318-1

OPENSUSE-SU-2024:10128-1

SUSE-SU-2016:0168-1

SUSE-SU-2016:0585-1

SUSE-SU-2016:0911-1

SUSE-SU-2016:1102-1

SUSE-SU-2016:1203-1

SUSE-SU-2016:2074-1

SUSE-SU-2016_0168-1

USN-2888-1

USN-2890-1

USN-2890-2

USN-2890-3

USN-2907-1

USN-2907-2

USN-2910-1

USN-2910-2

USN-2911-1

USN-2911-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 415

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/overlayfs_priv_esc.rb · Exploit
• 🔥 https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-2384 · Exploit
• 🔥 https://github.com/fi01/CVE-2015-3636 · Exploit
• 🔥 https://github.com/android-rooting-tools/libpingpong_exploit · Exploit
• 🔥 https://github.com/nardholio/cve-2016-0728 · Exploit
• 🔥 https://github.com/a7vinx/CVE-2015-3636 · Exploit
• 🔥 https://github.com/askk/libping_unhash_exploit_POC · Exploit
• 🔥 https://github.com/Kagami/docker_cve-2015-2925 · Exploit
• 🔥 https://github.com/bittorrent3389/cve-2016-0728 · Exploit
• 🔥 https://github.com/betalphafai/cve-2015-3636_crash · Exploit
• 🔥 https://github.com/neuschaefer/cve-2016-0728-testbed · Exploit
• 🔥 https://github.com/geekben/cve-collections/blob/master/cve20160728poc.c · Exploit
• 🔥 https://github.com/whu-enjoy/CVE-2015-8660 · Exploit
• https://osv.dev/vulnerability/MGASA-2016-0233 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2907-2 · Vendor Advisory