🛡️ AZL-64907 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-38280 affecting package kernel for versions less than 6.6.96.1-1

In the Linux kernel, the following vulnerability has been resolved:

bpf: Avoid __bpf_prog_ret0_warn when jit fails

syzkaller reported an issue:

WARNING: CPU: 3 PID: 217 at kernel/bpf/core.c:2357 __bpf_prog_ret0_warn+0xa/0x20 kernel/bpf/core.c:2357

Modules linked in:

CPU: 3 UID: 0 PID: 217 Comm: kworker/u32:6 Not tainted 6.15.0-rc4-syzkaller-00040-g8bac8898fe39

RIP: 0010:__bpf_prog_ret0_warn+0xa/0x20 kernel/bpf/core.c:2357

Call Trace:

<TASK>

bpf_dispatcher_nop_func include/linux/bpf.h:1316 [inline]

__bpf_prog_run include/linux/filter.h:718 [inline]

bpf_prog_run include/linux/filter.h:725 [inline]

cls_bpf_classify+0x74a/0x1110 net/sched/cls_bpf.c:105

...

When creating bpf program, 'fp->jit_requested' depends on bpf_jit_enable.

This issue is triggered because of CONFIG_BPF_JIT_ALWAYS_ON is not set

and bpf_jit_enable is set to 1, causing the arch to attempt JIT the prog,

but jit failed due to FAULT_INJECTION. As a result, incorrectly

treats the program as valid, when the program runs it calls

__bpf_prog_ret0_warn and triggers the WARN_ON_ONCE(1).

Affected software

AZL-64907 is recorded against 1 package.

  • kernel (fixed in 6.6.96.1-1)

Timeline and source

Published on 10 July 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-07-10
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.96.1-1

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