Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2017-18075

Release of Invalid Pointer or Reference

Published: Jan 24, 2018 | Modified: Feb 07, 2023
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2017-18075
CWEhttps://cwe.mitre.org/data/definitions/763.html

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.

Weakness

The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux 4.2 (including) 4.4.111 (excluding)
Linux_kernel Linux 4.5 (including) 4.9.76 (excluding)
Linux_kernel Linux 4.10 (including) 4.14.13 (excluding)

Extended Description

This weakness can take several forms, such as:

Potential Mitigations

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, glibc in Linux provides protection against free of invalid pointers.

References

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