CVE-2023-53681
bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent
Description
In the Linux kernel, the following vulnerability has been resolved: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent In some specific situations, the return value of __bch_btree_node_alloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btree_split->bch_btree_node_alloc->__bch_btree_node_alloc. Fix it by initializing the return value in __bch_btree_node_alloc.
INFO
Published Date :
Oct. 7, 2025, 4:15 p.m.
Last Modified :
Oct. 8, 2025, 7:38 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch to initialize return value.
- Update the Linux kernel to the patched version.
- Recompile the kernel if necessary.
- Reboot the system after applying updates.
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-2023-53681.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53681 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-2023-53681
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).
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The following list is the news that have been mention
CVE-2023-53681 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53681 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 07, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent In some specific situations, the return value of __bch_btree_node_alloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btree_split->bch_btree_node_alloc->__bch_btree_node_alloc. Fix it by initializing the return value in __bch_btree_node_alloc. Added Reference https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4 Added Reference https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4 Added Reference https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f Added Reference https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4 Added Reference https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944 Added Reference https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198 Added Reference https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03