PT-2024-11339 · Linux+2 · Linux Kernel+2

Published 2021-06-23 · Updated 2025-12-10 · CVE-2021-47340

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 A vulnerability has been resolved in the Linux kernel, specifically in the jfs file system. The issue arises when an inode with JFS SBI(inode->i sb)->ipimap == NULL is passed to the diFree() function, resulting in a general protection fault (GPF). This occurs because JFS IP() returns an invalid pointer when ipimap is NULL. The call trace includes functions such as diFree(), jfs evict inode(), evict(), iput final, iput.part.0, and iput.

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

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-15377

CVE-2021-47340

OPENSUSE-SU-2024_2185-1

SUSE-SU-2024:2010-1

SUSE-SU-2024:2185-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 435

• https://nvd.nist.gov/vuln/detail/CVE-2021-47340 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47340 · Vendor Advisory
• https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732 · Patch
• https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47340 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2185-1 · Vendor Advisory
• https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a · Patch
• https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3 · Patch
• https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1 · Patch
• https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18 · Patch
• https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc · Patch
• https://ubuntu.com/security/CVE-2021-47340 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2010-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47340 · Vendor Advisory
• https://git.kernel.org/stable/c/7bde24bde490f3139eee147efc6d60d6040fe975 · Patch