CVE-2023-53227
ubifs: dirty_cow_znode: Fix memleak in error handling path
Description
In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error handling path Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fix it by adding copied znode back to tnc, then it will be freed by ubifs_destroy_tnc_subtree() while closing tnc. Fetch a reproducer in [Link].
INFO
Published Date :
Sept. 15, 2025, 3:15 p.m.
Last Modified :
Sept. 15, 2025, 3:22 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the provided kernel patch for ubifs.
- Recompile and install the Linux kernel.
- Reboot the system to apply changes.
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-2023-53227.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53227 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-2023-53227
weaknesses.
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-2023-53227 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53227 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 15, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error handling path Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fix it by adding copied znode back to tnc, then it will be freed by ubifs_destroy_tnc_subtree() while closing tnc. Fetch a reproducer in [Link]. Added Reference https://git.kernel.org/stable/c/011050fc471cd0b32410694facb47bac20e7262b Added Reference https://git.kernel.org/stable/c/10b6c359e374df1120b951768260083ef047d7fb Added Reference https://git.kernel.org/stable/c/122deabfe1428bffe95e2bf364ff8a5059bdf089 Added Reference https://git.kernel.org/stable/c/510b80abe8d2d89e4ff21d71f1804ba2e5d3a96b Added Reference https://git.kernel.org/stable/c/5759076fc7c54614084002345a21bc2c578bf4a8 Added Reference https://git.kernel.org/stable/c/76c488e8a0e2783c6d8753cb7354a420593e8c30 Added Reference https://git.kernel.org/stable/c/9d4768523b092bfb9a9bfa6b1d903b968c8008cf Added Reference https://git.kernel.org/stable/c/bbcf899036eeb98c3a938fb08946c6b52771f71c