In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcm_proc_show() BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862 CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 kasan_report+0xba/0xf0 bcm_proc_show+0x969/0xa80 seq_read_iter+0x4f6/0x1260 seq_read+0x165/0x210 proc_reg_read+0x227/0x300 vfs_read+0x1d5/0x8d0 ksys_read+0x11e/0x240 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Allocated by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0 bcm_op is freed before procfs entry be removed in bcm_release(), this lead to bcm_proc_show() may read the freed bcm_op.
History

Tue, 25 Mar 2025 02:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_e4s:9.0

Mon, 24 Mar 2025 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Fri, 21 Mar 2025 06:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_eus:9.2
cpe:/o:redhat:rhel_eus:9.4

Thu, 20 Mar 2025 06:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_eus:9.2::nfv

Wed, 19 Mar 2025 15:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::nfv
cpe:/a:redhat:rhel_eus:9.2
cpe:/o:redhat:enterprise_linux:8

Wed, 12 Mar 2025 06:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
cpe:/o:redhat:rhel_aus:8.2
Vendors & Products Redhat enterprise Linux

Tue, 11 Mar 2025 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
Redhat rhel Extras Rt Els
CPEs cpe:/a:redhat:rhel_e4s:9.0
cpe:/a:redhat:rhel_e4s:9.0::nfv
cpe:/a:redhat:rhel_extras_rt_els:7
cpe:/a:redhat:rhel_tus:8.4::nfv
cpe:/o:redhat:rhel_aus:7.7
cpe:/o:redhat:rhel_aus:8.4
cpe:/o:redhat:rhel_e4s:8.4
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
cpe:/o:redhat:rhel_eus:8.8
cpe:/o:redhat:rhel_tus:8.4
Vendors & Products Redhat rhel Els
Redhat rhel Extras Rt Els

Mon, 10 Mar 2025 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Eus
Redhat rhel Tus
CPEs cpe:/a:redhat:rhel_eus:9.4
cpe:/o:redhat:rhel_aus:8.6
cpe:/o:redhat:rhel_e4s:8.6
cpe:/o:redhat:rhel_tus:8.6
Vendors & Products Redhat
Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Eus
Redhat rhel Tus

Wed, 26 Feb 2025 14:30:00 +0000

Type Values Removed Values Added
Metrics threat_severity

Moderate

threat_severity

Important


Tue, 24 Dec 2024 14:30:00 +0000

Type Values Removed Values Added
Metrics threat_severity

Low

threat_severity

Moderate


Wed, 11 Dec 2024 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Sat, 30 Nov 2024 01:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low


Thu, 28 Nov 2024 15:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcm_proc_show() BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862 CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 kasan_report+0xba/0xf0 bcm_proc_show+0x969/0xa80 seq_read_iter+0x4f6/0x1260 seq_read+0x165/0x210 proc_reg_read+0x227/0x300 vfs_read+0x1d5/0x8d0 ksys_read+0x11e/0x240 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Allocated by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0 bcm_op is freed before procfs entry be removed in bcm_release(), this lead to bcm_proc_show() may read the freed bcm_op.
Title can: bcm: Fix UAF in bcm_proc_show()
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-11-28T15:09:51.360Z

Updated: 2024-12-19T08:28:37.189Z

Reserved: 2024-08-21T06:07:11.018Z

Link: CVE-2023-52922

cve-icon Vulnrichment

Updated: 2024-12-11T14:25:21.314Z

cve-icon NVD

Status : Analyzed

Published: 2024-11-28T15:15:17.260

Modified: 2025-03-24T17:21:19.630

Link: CVE-2023-52922

cve-icon Redhat

Severity : Important

Publid Date: 2024-11-28T00:00:00Z

Links: CVE-2023-52922 - Bugzilla