CVE-2017-18075 Information

Description

crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68 http://www.securityfocus.com/bid/102813 https://access.redhat.com/errata/RHSA-2018:2948 https://github.com/torvalds/linux/commit/d76c68109f37cb85b243a1cf0f40313afd2bae68 https://usn.ubuntu.com/3619-1/ https://usn.ubuntu.com/3619-2/ https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.13

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8