CVE-2023-53681
MEDIUM severity · CVSS 5.5 · CWE-476
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4Patch
- https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4Patch
- https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9fPatch
- https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4Patch
- https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944Patch
- https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198Patch
- https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03Patch