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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/0dfefc2ea2f29ced2416017d7e5b1253a54c2735 cve-icon cve-icon
https://git.kernel.org/stable/c/38c345fd54afd9d6ed8d3fcddf3f6ea23887bf78 cve-icon cve-icon
https://git.kernel.org/stable/c/42a20cf51011788f04cf2adbcd7681f02bdb6c27 cve-icon cve-icon
https://git.kernel.org/stable/c/852b8ae934b5cbdc62496fa56ce9969aa2edda7f cve-icon cve-icon
https://git.kernel.org/stable/c/8fe5c37b0e08a97cf0210bb75970e945aaaeebab cve-icon cve-icon
https://git.kernel.org/stable/c/993f63239c219696aef8887a4e7d3a16bf5a8ece cve-icon cve-icon
https://git.kernel.org/stable/c/c6a8735d841bcb7649734bb3a787bb174c67c0d8 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html cve-icon
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html cve-icon
https://lore.kernel.org/linux-cve-announce/2025052000-CVE-2025-37948-2f8d@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-37948 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-37948 cve-icon
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00061}

 epss

{'score': 0.00051}

Fri, 27 Jun 2025 10:45:00 +0000

Type Values Removed Values Added
References

Sat, 14 Jun 2025 14:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Thu, 22 May 2025 02:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Tue, 20 May 2025 16:15:00 +0000

Type Values Removed Values Added
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.
Title arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-05-20T16:01:44.452Z

Updated: 2025-11-03T19:57:38.769Z

Reserved: 2025-04-16T04:51:23.972Z

Link: CVE-2025-37948

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-20T16:15:32.800

Modified: 2025-11-03T20:18:42.970

Link: CVE-2025-37948

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-20T00:00:00Z

Links: CVE-2025-37948 - Bugzilla