Cloudanix VulnDB

CVE-2024-53227

High · 7.8

CVSS

7.8

EPSS

0.3%

Published

Dec 27, 2024

CISA due date

—

Cloudanix analysis

Schedule a fix SSVC: Track

A flaw in the Linux kernel's handling of certain storage adapter drivers can let a local user crash the system or potentially gain higher privileges during driver loading.

Exploitation
Local Privilege
Attacker needs
Local User
Complexity
Theoretical
Impact
Full Compromise
Component
OS kernel
Class
Use After Free
Remediation
Upgrade
Effort
Medium
Patch risk
Low

What it actually does

Use-after-free in the bfa SCSI driver caused by double invocation of fc_release_transport when bfad_im_module_init fails, leading to slab memory corruption during module cleanup on error paths.

Why it matters to the business

Kernel instability or potential privilege escalation on systems with Brocade Fibre Channel adapters can disrupt storage connectivity and require emergency reboots or forensic investigation.

How an attack unfolds

An attacker with local access triggers module initialization failure in the bfa driver (e.g., via crafted module parameters or resource exhaustion) so that bfad_im_module_exit is still called, resulting in the double free of the transport template and subsequent memory corruption exploitable for code execution.

How to fix it

Upgrade the Linux kernel to commit 0ceac8012d3ddea3317f0d82934293d05feb8af1 or later stable release that avoids calling bfad_im_module_exit on bfad_im_module_init failure; apply vendor backports for affected distributions.

How to confirm the fix worked

Verify kernel source or running version includes the fix commit; attempt module load under error conditions and confirm absence of KASAN reports referencing bfad_im_module_exit or double fc_release_transport calls.

Typical attack path

  1. Obtain local access to target system
  2. Cause partial failure in bfad_im_module_init during bfa module load
  3. Trigger bfad_im_module_exit which calls fc_release_transport twice
  4. Exploit resulting use-after-free for memory corruption or privilege escalation

How to detect it

Search kernel logs and KASAN reports for strings referencing bfad_im_module_exit, fc_release_transport double release, or slab-use-after-free in __lock_acquire during modprobe of the bfa module.

  • bfad_im_module_exit+0x23/0x60 [bfa]
  • fc_release_transport+0x19/0x90 [scsi_transport_fc]
  • BUG: KASAN: slab-use-after-free in __lock_acquire
  • attribute_container_unregister+0x30/0x160

What your security team should do

  • Prioritize kernel updates on systems exposing the bfa driver
  • Restrict unprivileged module loading via kernel module signing and CAP_SYS_MODULE controls
  • Monitor for kernel oops involving bfa and scsi_transport_fc
  • Audit systems with Brocade FC hardware for exposure before applying updates

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
Debian:11 linux 0 No fix
Debian:11 linux 0 5.10.234-1
Debian:11 linux-6.1 0 6.1.128-1~deb11u1
Debian:11 linux-6.1 0 6.1.6.1.128-1~deb11u1
Debian:12 linux 0 6.1.123-1
Debian:13 linux 0 6.12.3-1
Linux Kernel 2.6.32 4.19.325
SUSE:Linux Enterprise High Availability Extension 15 SP6 kernel-default 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-64kb 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-default-base 0 5.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-docs 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-obs-build 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-source 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS kernel-syms 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-64kb 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-default-base 0 5.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-docs 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-obs-build 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-source 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-syms 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Live Patching 12 SP5 kernel-default 0 4.12.14-122.247.1
SUSE:Linux Enterprise Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_65 0 1-8.3.1
SUSE:Linux Enterprise Live Patching 15 SP5 kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_23 0 1-150500.11.3.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-default 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_8 0 1-150600.1.3.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_8 0 1-150600.13.3.2
SUSE:Linux Enterprise Micro 5.5 kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Micro 5.5 kernel-default-base 0 5.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise Micro 5.5 kernel-rt 0 5.14.21-150500.13.85.1
SUSE:Linux Enterprise Micro 5.5 kernel-source 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Micro 5.5 kernel-source-rt 0 5.14.21-150500.13.85.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-64kb 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-default 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-default-base 0 6.4.0-150600.23.38.1.150600.12.16.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-source 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-zfcpdump 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6 kernel-coco 0 6.4.0-15061.12.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6 kernel-coco_debug 0 6.4.0-15061.12.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6 kernel-source-coco 0 6.4.0-15061.12.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6 kernel-syms-coco 0 6.4.0-15061.12.coco15sp6.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-docs 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-obs-build 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-source 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-syms 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Legacy 15 SP6 kernel-default 0 6.4.0-150600.23.38.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-azure 0 6.4.0-150600.8.26.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-source-azure 0 6.4.0-150600.8.26.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-syms-azure 0 6.4.0-150600.8.26.1
SUSE:Linux Enterprise Server 12 SP5-LTSS kernel-default 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server 12 SP5-LTSS kernel-source 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server 12 SP5-LTSS kernel-syms 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-64kb 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-default-base 0 5.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-docs 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-obs-build 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-source 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-syms 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSS kernel-zfcpdump 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 kernel-default 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 kernel-source 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 kernel-syms 0 4.12.14-122.247.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-default 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-default-base 0 5.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-docs 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-obs-build 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-source 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 kernel-syms 0 5.14.21-150500.55.94.1
SUSE:Linux Enterprise Workstation Extension 15 SP6 kernel-default 0 6.4.0-150600.23.38.1
SUSE:Real Time Module 15 SP6 kernel-rt 0 6.4.0-150600.10.26.1
SUSE:Real Time Module 15 SP6 kernel-rt_debug 0 6.4.0-150600.10.26.1
SUSE:Real Time Module 15 SP6 kernel-source-rt 0 6.4.0-150600.10.26.1
SUSE:Real Time Module 15 SP6 kernel-syms-rt 0 6.4.0-150600.10.26.1
Ubuntu:16.04:LTS linux-hwe-edge 0 No fix
Ubuntu:18.04:LTS linux-aws-5.0 0 No fix
Ubuntu:18.04:LTS linux-aws-5.3 0 No fix
Ubuntu:18.04:LTS linux-azure 0 No fix
Ubuntu:18.04:LTS linux-azure-5.3 0 No fix
Ubuntu:18.04:LTS linux-azure-edge 0 No fix
Ubuntu:18.04:LTS linux-gcp 0 No fix
Ubuntu:18.04:LTS linux-gcp-5.3 0 No fix
Ubuntu:18.04:LTS linux-gke-4.15 0 No fix
Ubuntu:18.04:LTS linux-gke-5.4 0 No fix
Ubuntu:18.04:LTS linux-gkeop-5.4 0 No fix
Ubuntu:18.04:LTS linux-hwe 0 No fix
Ubuntu:18.04:LTS linux-hwe-edge 0 No fix
Ubuntu:18.04:LTS linux-oem 0 No fix
Ubuntu:18.04:LTS linux-oracle-5.0 0 No fix
Ubuntu:18.04:LTS linux-oracle-5.3 0 No fix
Ubuntu:20.04:LTS linux 0 No fix
Ubuntu:20.04:LTS linux 0 5.4.0-211.231
Ubuntu:20.04:LTS linux-aws 0 No fix
Ubuntu:20.04:LTS linux-aws 0 5.4.0-1142.152
Ubuntu:20.04:LTS linux-aws-5.11 0 No fix
Ubuntu:20.04:LTS linux-aws-5.13 0 No fix
Ubuntu:20.04:LTS linux-aws-5.15 0 No fix
Ubuntu:20.04:LTS linux-aws-5.15 0 5.15.0-1080.87~20.04.1
Ubuntu:20.04:LTS linux-aws-5.8 0 No fix
Ubuntu:20.04:LTS linux-azure 0 No fix
Ubuntu:20.04:LTS linux-azure 0 5.4.0-1147.154
Ubuntu:20.04:LTS linux-azure-5.11 0 No fix
Ubuntu:20.04:LTS linux-azure-5.13 0 No fix
Ubuntu:20.04:LTS linux-azure-5.15 0 No fix
Ubuntu:20.04:LTS linux-azure-5.15 0 5.15.0-1086.95~20.04.1
Ubuntu:20.04:LTS linux-azure-5.8 0 No fix
Ubuntu:20.04:LTS linux-azure-fde 0 No fix
Ubuntu:20.04:LTS linux-azure-fde-5.15 0 No fix
Ubuntu:20.04:LTS linux-bluefield 0 No fix
Ubuntu:20.04:LTS linux-bluefield 0 5.4.0-1101.108
Ubuntu:20.04:LTS linux-gcp 0 No fix
Ubuntu:20.04:LTS linux-gcp 0 5.4.0-1145.154
Ubuntu:20.04:LTS linux-gcp-5.11 0 No fix
Ubuntu:20.04:LTS linux-gcp-5.13 0 No fix
Ubuntu:20.04:LTS linux-gcp-5.15 0 No fix
Ubuntu:20.04:LTS linux-gcp-5.15 0 5.15.0-1081.90~20.04.1
Ubuntu:20.04:LTS linux-gcp-5.8 0 No fix
Ubuntu:20.04:LTS linux-gke 0 No fix
Ubuntu:20.04:LTS linux-gke-5.15 0 No fix
Ubuntu:20.04:LTS linux-gkeop 0 No fix
Ubuntu:20.04:LTS linux-gkeop-5.15 0 No fix
Ubuntu:20.04:LTS linux-hwe-5.11 0 No fix
Ubuntu:20.04:LTS linux-hwe-5.13 0 No fix
Ubuntu:20.04:LTS linux-hwe-5.15 0 No fix
Ubuntu:20.04:LTS linux-hwe-5.15 0 5.15.0-136.147~20.04.1
Ubuntu:20.04:LTS linux-hwe-5.8 0 No fix
Ubuntu:20.04:LTS linux-ibm 0 No fix
Ubuntu:20.04:LTS linux-ibm 0 5.4.0-1088.93
Ubuntu:20.04:LTS linux-ibm-5.15 0 No fix
Ubuntu:20.04:LTS linux-ibm-5.15 0 5.15.0-1074.77~20.04.1
Ubuntu:20.04:LTS linux-intel-5.13 0 No fix
Ubuntu:20.04:LTS linux-intel-iotg-5.15 0 No fix
Ubuntu:20.04:LTS linux-intel-iotg-5.15 0 5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS linux-iot 0 No fix
Ubuntu:20.04:LTS linux-iot 0 5.4.0-1048.51
Ubuntu:20.04:LTS linux-kvm 0 No fix
Ubuntu:20.04:LTS linux-kvm 0 5.4.0-1129.138
Ubuntu:20.04:LTS linux-lowlatency-hwe-5.15 0 No fix
Ubuntu:20.04:LTS linux-lowlatency-hwe-5.15 0 5.15.0-135.146~20.04.1
Ubuntu:20.04:LTS linux-oem-5.10 0 No fix
Ubuntu:20.04:LTS linux-oem-5.13 0 No fix
Ubuntu:20.04:LTS linux-oem-5.14 0 No fix
Ubuntu:20.04:LTS linux-oem-5.6 0 No fix
Ubuntu:20.04:LTS linux-oracle 0 No fix
Ubuntu:20.04:LTS linux-oracle 0 5.4.0-1140.150
Ubuntu:20.04:LTS linux-oracle-5.11 0 No fix
Ubuntu:20.04:LTS linux-oracle-5.13 0 No fix
Ubuntu:20.04:LTS linux-oracle-5.15 0 No fix
Ubuntu:20.04:LTS linux-oracle-5.15 0 5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS linux-oracle-5.8 0 No fix
Ubuntu:20.04:LTS linux-raspi 0 No fix
Ubuntu:20.04:LTS linux-raspi 0 5.4.0-1129.142
Ubuntu:20.04:LTS linux-raspi2 0 No fix
Ubuntu:20.04:LTS linux-riscv 0 No fix
Ubuntu:20.04:LTS linux-riscv-5.11 0 No fix
Ubuntu:20.04:LTS linux-riscv-5.15 0 No fix
Ubuntu:20.04:LTS linux-riscv-5.15 0 5.15.0-1075.79~20.04.1
Ubuntu:20.04:LTS linux-riscv-5.8 0 No fix
Ubuntu:20.04:LTS linux-xilinx-zynqmp 0 No fix
Ubuntu:20.04:LTS linux-xilinx-zynqmp 0 5.4.0-1060.64
Ubuntu:22.04:LTS linux 0 No fix
Ubuntu:22.04:LTS linux 0 5.15.0-135.146
Ubuntu:22.04:LTS linux-allwinner-5.19 0 No fix
Ubuntu:22.04:LTS linux-aws 0 No fix
Ubuntu:22.04:LTS linux-aws 0 5.15.0-1080.87
Ubuntu:22.04:LTS linux-aws-5.19 0 No fix
Ubuntu:22.04:LTS linux-aws-6.2 0 No fix
Ubuntu:22.04:LTS linux-aws-6.5 0 No fix
Ubuntu:22.04:LTS linux-aws-6.8 0 No fix
Ubuntu:22.04:LTS linux-aws-6.8 0 6.8.0-1027.29~22.04.1
Ubuntu:22.04:LTS linux-azure 0 No fix
Ubuntu:22.04:LTS linux-azure 0 5.15.0-1084.93
Ubuntu:22.04:LTS linux-azure-5.19 0 No fix
Ubuntu:22.04:LTS linux-azure-6.2 0 No fix
Ubuntu:22.04:LTS linux-azure-6.5 0 No fix
Ubuntu:22.04:LTS linux-azure-6.8 0 No fix
Ubuntu:22.04:LTS linux-azure-6.8 0 6.8.0-1027.32~22.04.1
Ubuntu:22.04:LTS linux-azure-fde 0 No fix
Ubuntu:22.04:LTS linux-azure-fde-5.19 0 No fix
Ubuntu:22.04:LTS linux-azure-fde-6.2 0 No fix
Ubuntu:22.04:LTS linux-gcp 0 No fix
Ubuntu:22.04:LTS linux-gcp 0 5.15.0-1079.88
Ubuntu:22.04:LTS linux-gcp-5.19 0 No fix
Ubuntu:22.04:LTS linux-gcp-6.2 0 No fix
Ubuntu:22.04:LTS linux-gcp-6.5 0 No fix
Ubuntu:22.04:LTS linux-gcp-6.8 0 No fix
Ubuntu:22.04:LTS linux-gcp-6.8 0 6.8.0-1028.30~22.04.1
Ubuntu:22.04:LTS linux-gke 0 No fix
Ubuntu:22.04:LTS linux-gke 0 5.15.0-1077.83
Ubuntu:22.04:LTS linux-gkeop 0 No fix
Ubuntu:22.04:LTS linux-gkeop 0 5.15.0-1062.70
Ubuntu:22.04:LTS linux-hwe-5.19 0 No fix
Ubuntu:22.04:LTS linux-hwe-6.2 0 No fix
Ubuntu:22.04:LTS linux-hwe-6.5 0 No fix
Ubuntu:22.04:LTS linux-hwe-6.8 0 No fix
Ubuntu:22.04:LTS linux-hwe-6.8 0 6.8.0-58.60~22.04.1
Ubuntu:22.04:LTS linux-ibm 0 No fix
Ubuntu:22.04:LTS linux-ibm 0 5.15.0-1072.75

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