CVE-2023-53681: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent
In the Linux kernel, the following vulnerability has been resolved:
bcache: Fix bchbtreenodealloc to make the failure behavior consistent
In some specific situations, the return value of bchbtreenodealloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btreesplit->bchbtreenodealloc->bchbtreenodealloc.
Fix it by initializing the return value in bchbtreenodealloc.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2023-53681?
CVE-2023-53681 has been classified with a moderate severity due to the potential for a NULL pointer dereference.
How do I fix CVE-2023-53681?
To fix CVE-2023-53681, update the Linux kernel to the latest patched version where this vulnerability has been resolved.
What systems are affected by CVE-2023-53681?
CVE-2023-53681 affects certain versions of the Linux kernel that implement the bcache feature.
What is the impact of CVE-2023-53681?
The impact of CVE-2023-53681 is the possibility of system instability or crashes due to a NULL pointer dereference.
Is CVE-2023-53681 actively exploited in the wild?
As of now, there are no reports confirming that CVE-2023-53681 is actively exploited in the wild.