CVE-2017-18075 — Release of Invalid Pointer or Reference in Kernel

CWE-763 — Release of Invalid Pointer or ReferenceCWE-628 — Function Call with Incorrectly Specified Arguments11 documents7 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 80.24%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelDebian LinuxCanonical Ubuntu Linux
Timeline
PublishedJan 24
Latest updateMay 13

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel4.2 — 4.4.111+2
▶Debianlinux/linux_kernel< 4.14.13-1+3
▶Ubuntulinux/linux_kernel< 4.4.0-119.143
▶debiandebian/linux< linux 4.14.13-1 (bookworm)

Also affects: Ubuntu Linux 14.04, 16.04

Patches

Patch: git.kernel.org ↗Patch: github.com ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-jgvv-ggg2-4ww6: crypto/pcrypt↗2022-05-13
▶
OSV
linux-lts-xenial, linux-aws vulnerabilities↗2018-04-05
▶
OSV
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities↗2018-04-04
▶
OSV
CVE-2017-18075: crypto/pcrypt↗2018-01-24
▶

📋Vendor Advisories

4
Ubuntu
Linux kernel (Xenial HWE) vulnerabilities↗2018-04-05
▶
Ubuntu
Linux kernel vulnerabilities↗2018-04-04
▶
Red Hat
kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service↗2017-12-20
▶
Debian
CVE-2017-18075: linux - crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances,...↗2017
▶

💬Community

2
Bugzilla
CVE-2017-18075 kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service [fedora-all]↗2018-02-17
▶
Bugzilla
CVE-2017-18075 kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service↗2018-01-29
▶