CVE-2021-47340
"JFS Linux Kernel Inconsistent Memory Access Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: jfs: fix GPF in diFree Avoid passing inode with JFS_SBI(inode->i_sb)->ipimap == NULL to diFree()[1]. GFP will appear: struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap; struct inomap *imap = JFS_IP(ipimap)->i_imap; JFS_IP() will return invalid pointer when ipimap == NULL Call Trace: diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1] jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154 evict+0x2ed/0x750 fs/inode.c:578 iput_final fs/inode.c:1654 [inline] iput.part.0+0x3fe/0x820 fs/inode.c:1680 iput+0x58/0x70 fs/inode.c:1670
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
May 12, 2025, 7:58 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47340.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47340 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47340 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
May. 12, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.240 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.133 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.51 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.18 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.4.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 5.13.3 Added Reference Type CVE: https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/42f102ea1943ecb10a0756bf75424de5d1d5beed Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/42f102ea1943ecb10a0756bf75424de5d1d5beed Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/7bde24bde490f3139eee147efc6d60d6040fe975 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7bde24bde490f3139eee147efc6d60d6040fe975 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a Added Reference https://git.kernel.org/stable/c/42f102ea1943ecb10a0756bf75424de5d1d5beed Added Reference https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc Added Reference https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1 Added Reference https://git.kernel.org/stable/c/7bde24bde490f3139eee147efc6d60d6040fe975 Added Reference https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18 Added Reference https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732 Added Reference https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 Added Reference https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: jfs: fix GPF in diFree Avoid passing inode with JFS_SBI(inode->i_sb)->ipimap == NULL to diFree()[1]. GFP will appear: struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap; struct inomap *imap = JFS_IP(ipimap)->i_imap; JFS_IP() will return invalid pointer when ipimap == NULL Call Trace: diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1] jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154 evict+0x2ed/0x750 fs/inode.c:578 iput_final fs/inode.c:1654 [inline] iput.part.0+0x3fe/0x820 fs/inode.c:1680 iput+0x58/0x70 fs/inode.c:1670 Added Reference kernel.org https://git.kernel.org/stable/c/7bde24bde490f3139eee147efc6d60d6040fe975 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/42f102ea1943ecb10a0756bf75424de5d1d5beed [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47340 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47340
weaknesses.