CVE-2025-37948

arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs A malicious BPF program may manipulate the branch history to influence what the hardware speculates will happen next. On exit from a BPF program, emit the BHB mititgation sequence. This is only applied for 'classic' cBPF programs that are loaded by seccomp.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/c6a8735d841bcb7649734bb3a787bb174c67c0d8
https://git.kernel.org/stable/c/993f63239c219696aef8887a4e7d3a16bf5a8ece
https://git.kernel.org/stable/c/8fe5c37b0e08a97cf0210bb75970e945aaaeebab
https://git.kernel.org/stable/c/42a20cf51011788f04cf2adbcd7681f02bdb6c27
https://git.kernel.org/stable/c/38c345fd54afd9d6ed8d3fcddf3f6ea23887bf78
https://git.kernel.org/stable/c/852b8ae934b5cbdc62496fa56ce9969aa2edda7f
https://git.kernel.org/stable/c/0dfefc2ea2f29ced2416017d7e5b1253a54c2735

Frequently Asked Questions

What is the severity of CVE-2025-37948?: CVE-2025-37948 has not yet been assigned a CVSS score.
How to fix CVE-2025-37948?: To fix CVE-2025-37948, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37948 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37948 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37948?: CVE-2025-37948 affects Linux Linux, Linux Linux.

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