---
id: CVE-2025-38285
title: 'bpf: Fix WARN() in get_bpf_raw_tp_regs'
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  bpf: Fix WARN() in get_bpf_raw_tp_regs


  syzkaller reported an issue:


  WARNING: CPU: 3 PID: 5971 at kernel/trace/bpf_trace.c:1861
  get_bpf_raw_tp_regs+0xa4/0x100 kernel/t…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    44ebe361abb322d2afd77930fa767a99f271c4d1
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    147ea936fc6fa8fe0c93f0df918803a5375ca535
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    ee90be48edb3dac612e0b7f5332482a9e8be2696
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    e167414beabb1e941fe563a96becc98627d5bdf6
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    6d8f39875a10a194051c3eaefebc7ac06a34aaf3
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    c98cdf6795a36bca163ebb40411fef1687b9eb13
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    18e8cbbae79cb35bdce8a01c889827b9799c762e
  - >-
    Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 <
    3880cdbed1c4607e378f58fa924c5d6df900d1d3
  - Linux a7177b94aff4febe657fe31bb7e5ecdef72079f4
  - Linux 2a9fedc1ef4be2acb4fd4674f405c21c811e1505
  - Linux >= 4.19.57 < 4.20
  - Linux >= 5.1.16 < 5.2
  - Linux 5.2
published: '2025-07-10'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:07:02.423Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-38285'
references:
  - url: 'https://git.kernel.org/stable/c/44ebe361abb322d2afd77930fa767a99f271c4d1'
  - url: 'https://git.kernel.org/stable/c/147ea936fc6fa8fe0c93f0df918803a5375ca535'
  - url: 'https://git.kernel.org/stable/c/ee90be48edb3dac612e0b7f5332482a9e8be2696'
  - url: 'https://git.kernel.org/stable/c/e167414beabb1e941fe563a96becc98627d5bdf6'
  - url: 'https://git.kernel.org/stable/c/6d8f39875a10a194051c3eaefebc7ac06a34aaf3'
  - url: 'https://git.kernel.org/stable/c/c98cdf6795a36bca163ebb40411fef1687b9eb13'
  - url: 'https://git.kernel.org/stable/c/18e8cbbae79cb35bdce8a01c889827b9799c762e'
  - url: 'https://git.kernel.org/stable/c/3880cdbed1c4607e378f58fa924c5d6df900d1d3'
tags:
  - cve.org
epss: 0.00209
epssPercentile: 0.109
ingestedAt: '2026-10-15T05:52:46.090Z'
---

## Overview

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

bpf: Fix WARN() in get_bpf_raw_tp_regs

syzkaller reported an issue:

WARNING: CPU: 3 PID: 5971 at kernel/trace/bpf_trace.c:1861 get_bpf_raw_tp_regs+0xa4/0x100 kernel/trace/bpf_trace.c:1861
Modules linked in:
CPU: 3 UID: 0 PID: 5971 Comm: syz-executor205 Not tainted 6.15.0-rc5-syzkaller-00038-g707df3375124 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:get_bpf_raw_tp_regs+0xa4/0x100 kernel/trace/bpf_trace.c:1861
RSP: 0018:ffffc90003636fa8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff81c6bc4c
RDX: ffff888032efc880 RSI: ffffffff81c6bc83 RDI: 0000000000000005
RBP: ffff88806a730860 R08: 0000000000000005 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000001 R14: ffffc90003637008 R15: 0000000000000900
FS:  0000000000000000(0000) GS:ffff8880d6cdf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7baee09130 CR3: 0000000029f5a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1934 [inline]
 bpf_get_stack_raw_tp+0x24/0x160 kernel/trace/bpf_trace.c:1931
 bpf_prog_ec3b2eefa702d8d3+0x43/0x47
 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]
 __bpf_trace_run kernel/trace/bpf_trace.c:2363 [inline]
 bpf_trace_run3+0x23f/0x5a0 kernel/trace/bpf_trace.c:2405
 __bpf_trace_mmap_lock_acquire_returned+0xfc/0x140 include/trace/events/mmap_lock.h:47
 __traceiter_mmap_lock_acquire_returned+0x79/0xc0 include/trace/events/mmap_lock.h:47
 __do_trace_mmap_lock_acquire_returned include/trace/events/mmap_lock.h:47 [inline]
 trace_mmap_lock_acquire_returned include/trace/events/mmap_lock.h:47 [inline]
 __mmap_lock_do_trace_acquire_returned+0x138/0x1f0 mm/mmap_lock.c:35
 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
 mmap_read_trylock include/linux/mmap_lock.h:204 [inline]
 stack_map_get_build_id_offset+0x535/0x6f0 kernel/bpf/stackmap.c:157
 __bpf_get_stack+0x307/0xa10 kernel/bpf/stackmap.c:483
 ____bpf_get_stack kernel/bpf/stackmap.c:499 [inline]
 bpf_get_stack+0x32/0x40 kernel/bpf/stackmap.c:496
 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1941 [inline]
 bpf_get_stack_raw_tp+0x124/0x160 kernel/trace/bpf_trace.c:1931
 bpf_prog_ec3b2eefa702d8d3+0x43/0x47

Tracepoint like trace_mmap_lock_acquire_returned may cause nested call
as the corner case show above, which will be resolved with more general
method in the future. As a result, WARN_ON_ONCE will be triggered. As
Alexei suggested, remove the WARN_ON_ONCE first.

## Affected

- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < 44ebe361abb322d2afd77930fa767a99f271c4d1`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < 147ea936fc6fa8fe0c93f0df918803a5375ca535`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < ee90be48edb3dac612e0b7f5332482a9e8be2696`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < e167414beabb1e941fe563a96becc98627d5bdf6`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < 6d8f39875a10a194051c3eaefebc7ac06a34aaf3`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < c98cdf6795a36bca163ebb40411fef1687b9eb13`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < 18e8cbbae79cb35bdce8a01c889827b9799c762e`
- `Linux >= 9594dc3c7e71b9f52bee1d7852eb3d4e3aea9e99 < 3880cdbed1c4607e378f58fa924c5d6df900d1d3`
- `Linux a7177b94aff4febe657fe31bb7e5ecdef72079f4`
- `Linux 2a9fedc1ef4be2acb4fd4674f405c21c811e1505`
- `Linux >= 4.19.57 < 4.20`
- `Linux >= 5.1.16 < 5.2`
- `Linux 5.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.