PT-2024-11215 · Linux+2 · Linux Kernel+2

Dan Carpenter · Published 2021-05-20 · Updated 2024-08-19 · CVE-2021-47168

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to an incorrect limit in the filelayout decode layout() function, where the size of struct nfs fh is two bytes too large, potentially leading to memory corruption. The correct size should be NFS MAXFHSIZE, which is the size of the ->data[] buffer.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2025-13708

CVE-2021-47168

OPENSUSE-SU-2024_1489-1

SUSE-SU-2024:1454-1

SUSE-SU-2024:1465-1

SUSE-SU-2024:1489-1

SUSE-SU-2024:1643-1

SUSE-SU-2024:1646-1

SUSE-SU-2024:1870-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 620

• https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a · Patch
• https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1 · Patch
• https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1646-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47168 · Vendor Advisory
• https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8 · Patch
• https://cve.org/CVERecord?id=CVE-2021-47168 · Security Note
• https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1454-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47168 · Vendor Advisory
• https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040 · Patch
• https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47168 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1489-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1643-1 · Vendor Advisory