CVE-2023-53681

medium

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.

References

https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03

https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198

https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944

https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4

https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f

https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4

https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4

Details

Source: Mitre, NVD

Published: 2025-10-07

Updated: 2025-10-08

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00024