CVE-2025-37948

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

MEDIUM

5.5

CVSS Score

Published: May 20, 2025 at 04:01 PM UTC

Updated: June 17, 2026 at 09:15 AM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

v < 5.10.2393.7 ≤ v < 5.10.2393.7 ≤ v < 5.15.1863.7 ≤ v < 6.1.1393.7 ≤ v < 6.12.293.7 ≤ v < 6.14.73.7 ≤ v < 6.153.7 ≤ v < 6.6.915.11 ≤ v < 5.15.1865.16 ≤ v < 6.1.1396.13 ≤ v < 6.14.76.2 ≤ v < 6.6.916.7 ≤ v < 6.12.290be7320a635c2e434e8b67e0e9474a85ceb421c43.7 6.15 rc1 6.15 rc2 6.15 rc3 6.15 rc4 6.15 rc5 6.15 rc6

Vendor states this is fixed in 0dfefc2ea2f29ced2416017d7e5b1253a54c2735 (fixed)

Vendor states this is fixed in 38c345fd54afd9d6ed8d3fcddf3f6ea23887bf78 (fixed)

Vendor states this is fixed in 42a20cf51011788f04cf2adbcd7681f02bdb6c27 (fixed)

Vendor states this is fixed in 852b8ae934b5cbdc62496fa56ce9969aa2edda7f (fixed)

Vendor states this is fixed in 8fe5c37b0e08a97cf0210bb75970e945aaaeebab (fixed)

Vendor states this is fixed in 993f63239c219696aef8887a4e7d3a16bf5a8ece (fixed)

Vendor states this is fixed in c6a8735d841bcb7649734bb3a787bb174c67c0d8 (fixed)

Vendor states this is fixed in 3.7 (unaffected)

Vendor states this is fixed in 5.10.239 (unaffected)

Vendor states this is fixed in 5.15.186 (unaffected)

Vendor states this is fixed in 6.1.139 (unaffected)

Vendor states this is fixed in 6.12.29 (unaffected)