🛡️ CVE-2024-53227 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

scsi: bfa: Fix use-after-free in bfad_im_module_exit()

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

scsi: bfa: Fix use-after-free in bfad_im_module_exit()

BUG: KASAN: slab-use-after-free in __lock_acquire+0x2aca/0x3a20

Read of size 8 at addr ffff8881082d80c8 by task modprobe/25303

Call Trace:

<TASK>

dump_stack_lvl+0x95/0xe0

print_report+0xcb/0x620

kasan_report+0xbd/0xf0

__lock_acquire+0x2aca/0x3a20

lock_acquire+0x19b/0x520

_raw_spin_lock+0x2b/0x40

attribute_container_unregister+0x30/0x160

fc_release_transport+0x19/0x90 [scsi_transport_fc]

bfad_im_module_exit+0x23/0x60 [bfa]

bfad_init+0xdb/0xff0 [bfa]

do_one_initcall+0xdc/0x550

do_init_module+0x22d/0x6b0

load_module+0x4e96/0x5ff0

init_module_from_file+0xcd/0x130

idempotent_init_module+0x330/0x620

__x64_sys_finit_module+0xb3/0x110

do_syscall_64+0xc1/0x1d0

entry_SYSCALL_64_after_hwframe+0x77/0x7f

</TASK>

Allocated by task 25303:

kasan_save_stack+0x24/0x50

kasan_save_track+0x14/0x30

__kasan_kmalloc+0x7f/0x90

fc_attach_transport+0x4f/0x4740 [scsi_transport_fc]

bfad_im_module_init+0x17/0x80 [bfa]

bfad_init+0x23/0xff0 [bfa]

do_one_initcall+0xdc/0x550

do_init_module+0x22d/0x6b0

load_module+0x4e96/0x5ff0

init_module_from_file+0xcd/0x130

idempotent_init_module+0x330/0x620

__x64_sys_finit_module+0xb3/0x110

do_syscall_64+0xc1/0x1d0

entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 25303:

kasan_save_stack+0x24/0x50

kasan_save_track+0x14/0x30

kasan_save_free_info+0x3b/0x60

__kasan_slab_free+0x38/0x50

kfree+0x212/0x480

bfad_im_module_init+0x7e/0x80 [bfa]

bfad_init+0x23/0xff0 [bfa]

do_one_initcall+0xdc/0x550

do_init_module+0x22d/0x6b0

load_module+0x4e96/0x5ff0

init_module_from_file+0xcd/0x130

idempotent_init_module+0x330/0x620

__x64_sys_finit_module+0xb3/0x110

do_syscall_64+0xc1/0x1d0

entry_SYSCALL_64_after_hwframe+0x77/0x7f

Above issue happens as follows:

bfad_init

error = bfad_im_module_init()

fc_release_transport(bfad_im_scsi_transport_template);

if (error)

goto ext;

ext:

bfad_im_module_exit();

fc_release_transport(bfad_im_scsi_transport_template);

--> Trigger double release

Don't call bfad_im_module_exit() if bfad_im_module_init() failed.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2024-53227 is recorded against 2 packages.

  • kernel (from 6.12.0 up to 6.12.2)
  • linux-kernel (from 6.12 up to 6.12.2)

Timeline and source

Published on 27 December 2024 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-53227 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-12-27
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.12.0 6.12.2
linux-kernel 6.12 6.12.2

References

Similar Threats

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