PT-2018-11063 · Linux+3 · Linux Kernel+3

Shankara Pailoor · Published 2018-06-12 · Updated 2024-06-15 · CVE-2018-12232

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.17.1

Description A race condition exists between the fchownat and close functions when they target the same socket file descriptor. This issue is related to the sock close and sockfs setattr functions. The fchownat function does not increment the file descriptor reference count, allowing the close function to set the socket to NULL during fchownat's execution. This leads to a NULL pointer dereference and can cause a system crash.

Recommendations For Linux kernel versions prior to 4.17.1, update to version 4.17.1 or later to resolve the issue.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2018-1971

ALT-PU-2018-1976

ALT-PU-2019-1433

CVE-2018-12232

OPENSUSE-SU-2019:0065-1

OPENSUSE-SU-2019_0065-1

OPENSUSE-SU-2024:10728-1

OPENSUSE-SU-2024:13704-1

RHSA-2018:2948

SUSE-SU-2019:0150-1

SUSE-SU-2019:0196-1

SUSE-SU-2019:0222-1

SUSE-SU-2019:0224-1

SUSE-SU-2019:0740-1

SUSE-SU-2019_0150-1

SUSE-SU-2019_0196-1

SUSE-SU-2019_0224-1

SUSE-SU-2019_0740-1

USN-3752-1

USN-3752-2

USN-3752-3

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 552

• https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14 · Patch
• https://ubuntu.com/security/CVE-2018-13094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12904 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5814 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0740-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-12232 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-12232 · Security Note
• https://usn.ubuntu.com/3752-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12232 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2018:2948 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0150-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3752-3 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-12232 · Vendor Advisory
• https://patchwork.ozlabs.org/patch/926519 · Patch
• https://ubuntu.com/security/CVE-2018-1000204 · Vendor Advisory