PT-2017-18790 · Linux+1 · Linux Kernel+1

Baozeng · Published 2017-05-23 · Updated 2018-07-09 · CVE-2017-9211

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 4.11.2

Description The issue is related to the crypto skcipher init tfm function in crypto/skcipher.c, which relies on a setkey function lacking a key-size check. This allows local users to cause a denial of service via a crafted application, resulting in a NULL pointer dereference.

Recommendations For Linux kernel versions prior to 4.11.2, update to version 4.11.2 or later to resolve the issue.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

CVE-2017-9211

Affected Products

Alt Linux

Linux Kernel

References · 11

• https://github.com/torvalds/linux/commit/9933e113c2e87a9f46a40fde8dafbf801dca1ab9 · Patch
• https://ubuntu.com/security/CVE-2017-9211 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-9211 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-9211 · Security Note
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9933e113c2e87a9f46a40fde8dafbf801dca1ab9 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-9211 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-9211 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-9211 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-9211 · Vendor Advisory
• https://patchwork.kernel.org/patch/9718933 · Patch
• https://git.kernel.org/linus/9933e113c2e87a9f46a40fde8dafbf801dca1ab9 · Note