PT-2016-7426 · Linux+3 · Linux Kernel+3

Dmitry Vyukov · Published 2016-08-15 · Updated 2023-01-19 · CVE-2016-7911

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.6.6

Description A race condition exists in the get task ioprio function, allowing local users to potentially gain privileges or cause a denial of service through a crafted ioprio get system call. This issue can lead to a use-after-free scenario.

Recommendations For Linux kernel versions prior to 4.6.6, update to version 4.6.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the ioprio get system call to minimize the risk of exploitation.

Fix

DoS

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

ALT-PU-2016-1842

ALT-PU-2016-1843

CVE-2016-7911

DLA-772-1

OPENSUSE-SU-2016_3061-1

SUSE-SU-2017:0333-1

SUSE-SU-2017:0407-1

SUSE-SU-2017:0437-1

SUSE-SU-2017:0464-1

SUSE-SU-2017:0471-1

SUSE-SU-2017:0494-1

SUSE-SU-2017:1102-1

USN-3206-1

USN-3207-1

USN-3207-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 390

• https://github.com/torvalds/linux/commit/8ba8682107ee2ca3347354e018865d8e1967c5f4 · Patch
• https://ubuntu.com/security/CVE-2016-7910 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-7911 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.6 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0407-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0494-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3207-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6074 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7911 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:1102-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0437-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-7911 · Security Note
• https://osv.dev/vulnerability/USN-3207-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0471-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0333-1 · Vendor Advisory