CVE-2018-17972 — Race Condition in Kernel

CWE-362 — Race ConditionCWE-200 — Sensitive Information Exposure20 documents9 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 82.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Linux KernelCanonical Ubuntu LinuxDebian Linux+6 more
Timeline
PublishedOct 3
Latest updateMay 13

Description

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages5 packages

▶Debianlinux/linux_kernel< 4.18.20-1+3
▶NVDlinux/linux_kernel4.18.11

Also affects: Debian Linux 8.0, Ubuntu Linux 12.04, 14.04, 16.04, 18.04, 18.10, Enterprise Linux 7.6

Patches

Patch: marc.info ↗Patch: marc.info ↗

🔴Vulnerability Details

5
GHSA
GHSA-qgp4-5xqg-pc3p: An issue was discovered in the proc_pid_stack function in fs/proc/base↗2022-05-13
▶
Project0
Mitigations are attack surface, too - Project Zero↗2020-02-01
▶
OSV
linux vulnerabilities↗2019-02-04
▶
CVEList
CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base↗2018-10-03
▶
OSV
CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base↗2018-10-03
▶

📋Vendor Advisories

12
Ubuntu
Linux kernel (Azure) vulnerabilities↗2019-02-07
▶
Ubuntu
Linux kernel (Trusty HWE) vulnerabilities↗2019-02-04
▶
Ubuntu
Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities↗2019-02-04
▶
Ubuntu
Linux kernel vulnerabilities↗2019-02-04
▶
Ubuntu
Linux kernel (HWE) vulnerabilities↗2019-02-04
▶

💬Community

2
Bugzilla
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks [fedora-all]↗2018-10-05
▶
Bugzilla
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks↗2018-10-05
▶
CVE-2018-17972 — Race Condition in Linux Kernel | cvebase