CVE-2024-36919

scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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

scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload

The session resources are used by FW and driver when session is offloaded,
once session is uploaded these resources are not used. The lock is not
required as these fields won't be used any longer. The offload and upload
calls are sequential, hence lock is not required.

This will suppress following BUG_ON():

[ 449.843143] ------------[ cut here ]------------
[ 449.848302] kernel BUG at mm/vmalloc.c:2727!
[ 449.853072] invalid opcode: 0000 [#1] PREEMPT SMP PTI
[ 449.858712] CPU: 5 PID: 1996 Comm: kworker/u24:2 Not tainted 5.14.0-118.el9.x86_64 #1
Rebooting.
[ 449.867454] Hardware name: Dell Inc. PowerEdge R730/0WCJNT, BIOS 2.3.4 11/08/2016
[ 449.876966] Workqueue: fc_rport_eq fc_rport_work [libfc]
[ 449.882910] RIP: 0010:vunmap+0x2e/0x30
[ 449.887098] Code: 00 65 8b 05 14 a2 f0 4a a9 00 ff ff 00 75 1b 55 48 89 fd e8 34 36 79 00 48 85 ed 74 0b 48 89 ef 31 f6 5d e9 14 fc ff ff 5d c3 <0f> 0b 0f 1f 44 00 00 41 57 41 56 49 89 ce 41 55 49 89 fd 41 54 41
[ 449.908054] RSP: 0018:ffffb83d878b3d68 EFLAGS: 00010206
[ 449.913887] RAX: 0000000080000201 RBX: ffff8f4355133550 RCX: 000000000d400005
[ 449.921843] RDX: 0000000000000001 RSI: 0000000000001000 RDI: ffffb83da53f5000
[ 449.929808] RBP: ffff8f4ac6675800 R08: ffffb83d878b3d30 R09: 00000000000efbdf
[ 449.937774] R10: 0000000000000003 R11: ffff8f434573e000 R12: 0000000000001000
[ 449.945736] R13: 0000000000001000 R14: ffffb83da53f5000 R15: ffff8f43d4ea3ae0
[ 449.953701] FS: 0000000000000000(0000) GS:ffff8f529fc80000(0000) knlGS:0000000000000000
[ 449.962732] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 449.969138] CR2: 00007f8cf993e150 CR3: 0000000efbe10003 CR4: 00000000003706e0
[ 449.977102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 449.985065] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 449.993028] Call Trace:
[ 449.995756] __iommu_dma_free+0x96/0x100
[ 450.000139] bnx2fc_free_session_resc+0x67/0x240 [bnx2fc]
[ 450.006171] bnx2fc_upload_session+0xce/0x100 [bnx2fc]
[ 450.011910] bnx2fc_rport_event_handler+0x9f/0x240 [bnx2fc]
[ 450.018136] fc_rport_work+0x103/0x5b0 [libfc]
[ 450.023103] process_one_work+0x1e8/0x3c0
[ 450.027581] worker_thread+0x50/0x3b0
[ 450.031669] ? rescuer_thread+0x370/0x370
[ 450.036143] kthread+0x149/0x170
[ 450.039744] ? set_kthread_struct+0x40/0x40
[ 450.044411] ret_from_fork+0x22/0x30
[ 450.048404] Modules linked in: vfat msdos fat xfs nfs_layout_nfsv41_files rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver dm_service_time qedf qed crc8 bnx2fc libfcoe libfc scsi_transport_fc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp dcdbas rapl intel_cstate intel_uncore mei_me pcspkr mei ipmi_ssif lpc_ich ipmi_si fuse zram ext4 mbcache jbd2 loop nfsv3 nfs_acl nfs lockd grace fscache netfs irdma ice sd_mod t10_pi sg ib_uverbs ib_core 8021q garp mrp stp llc mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt mxm_wmi fb_sys_fops cec crct10dif_pclmul ahci crc32_pclmul bnx2x drm ghash_clmulni_intel libahci rfkill i40e libata megaraid_sas mdio wmi sunrpc lrw dm_crypt dm_round_robin dm_multipath dm_snapshot dm_bufio dm_mirror dm_region_hash dm_log dm_zero dm_mod linear raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid6_pq libcrc32c crc32c_intel raid1 raid0 iscsi_ibft squashfs be2iscsi bnx2i cnic uio cxgb4i cxgb4 tls
[ 450.048497] libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi edd ipmi_devintf ipmi_msghandler
[ 450.159753] ---[ end trace 712de2c57c64abc8 ]---

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: scsi: bnx2fc: elimine spin_lock_bh mientras libera recursos después de la carga. El FW y el controlador utilizan los recursos de la sesión cuando se descarga la sesión; una vez cargada la sesión, estos recursos no se utilizan. El bloqueo no es necesario ya que estos campos ya no se utilizarán. Las llamadas de descarga y carga son secuenciales, por lo que no se requiere bloqueo. Esto suprimirá el siguiente BUG_ON(): [449.843143] ------------[ cortar aquí ]------------ [ 449.848302] ERROR del kernel en mm/vmalloc.c :2727! [ 449.853072] código de operación no válido: 0000 [#1] PREEMPT SMP PTI [ 449.858712] CPU: 5 PID: 1996 Comm: kworker/u24:2 No contaminado 5.14.0-118.el9.x86_64 #1 Reiniciando. [ 449.867454] Nombre del hardware: Dell Inc. PowerEdge R730/0WCJNT, BIOS 2.3.4 08/11/2016 [ 449.876966] Cola de trabajo: fc_rport_eq fc_rport_work [libfc] [ 449.882910] RIP: vunmap+0x2e/0x3 0 [ 449.887098] Código: 00 65 8b 05 14 a2 f0 4a a9 00 ff ff 00 75 1b 55 48 89 fd e8 34 36 79 00 48 85 ed 74 0b 48 89 ef 31 f6 5d e9 14 fc ff ff 5d c3 <0f> 0b 0f f 44 00 00 41 57 41 56 49 89 ce 41 55 49 89 fd 41 54 41 [ 449.908054] RSP: 0018:ffffb83d878b3d68 EFLAGS: 00010206 [ 449.913887] RAX: 00000000800 00201 RBX: ffff8f4355133550 RCX: 000000000d400005 [ 449.921843] RDX: 00000000000000001 RSI: 0000000000001000 RDI: ffffb83da53f5000 [ 449.929808] RBP: ffff8f4ac6675800 R08: ffffb83d878b3d30 R09: 00000000000efbdf [ 449.937774] R10: 0000000000000003 R11: ff8f434573e000 R12: 0000000000001000 [ 449.945736] R13: 0000000000001000 R14: ffffb83da53f5000 R15: ffff8f43d4ea3ae0 [ 449.953701] FS: 000000000000(0000) GS:ffff8f529fc80000( 0000) knlGS:0000000000000000 [ 449.962732] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 449.969138] CR2: 00007f8cf993e150 CR3: 0efbe10003 CR4: 00000000003706e0 [ 449.977102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000000000 [ 449.985065] DR3: 0000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [449.993028] Seguimiento de llamadas: [449.995756] __iommu_dma_free+0x96/0x100 [450.000139] 240 [bnx2fc] [ 450.006171] bnx2fc_upload_session+0xce/0x100 [bnx2fc] [ 450.011910] bnx2fc_rport_event_handler+0x9f/0x240 [bnx2fc] [ 450.018136] fc_rport_work+0x103/0x5b0 [libfc] [ 450.023103] Process_one_work+0x1e8/0x3c0 [ 450.027581] trabajador_thread+0x50/0x3b0 [ 450.031669] ? hilo_rescate+0x370/0x370 [ 450.036143] kthread+0x149/0x170 [ 450.039744] ? set_kthread_struct+0x40/0x40 [ 450.044411] ret_from_fork+0x22/0x30 [ 450.048404] Módulos vinculados en: vfat msdos fat xfs nfs_layout_nfsv41_files rpcsec_gss_krb5 auth_rpcgss nfsv4 r dm_service_time qedf qed crc8 bnx2fc libfcoe libfc scsi_transport_fc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp dcdbas rapl intel_cstate intel_uncore mei_me pcspkr mei ipmi_ssif lpc_ich ipmi_si fusible zram ext4 mbcache jbd2 bucle nfsv3 nfs_acl nfs lockd gracia fscache netfs irdma ice sd_mod t10_pi sg ib_uverbs ib_core 8021q garp mrp stp llc mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect mxm_wmi fb_sys_fops cec crct10dif_pclmul ahci crc32_pclmul bnx2x drm ghash_clmulni_intel libahci rfkill i40e libata megaraid_sas mdio wmi sunrpc lrw dm_crypt dm_round_robin dm_multipath dm_snapshot dm_bufio dm_mirror dm_region_hash dm_log dm_zero dm_mod raid10 lineal raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid6_pq libcrc32c crc32c_intel raid1 iscsi_ibft squashfs be2iscsi bnx2i cnic uio cxgb4i cxgb4 tls [ 450.048497] libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi edd ipmi_devintf ipmi_msghandler [ 450.15 9753] - --[ final de seguimiento 712de2c57c64abc8 ]---

*Credits: N/A

CVSS Scores

Red Hatv3.1 4.4

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-30 CVE Reserved
2024-05-30 CVE Published
2024-05-31 EPSS Updated
2024-11-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-667: Improper Locking

CAPEC

References (12)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/468f3e3c15076338367b0945b041105b67cf31e3	2024-05-17
https://git.kernel.org/stable/c/acd370c1fb86b7302c1cbb354a7c1cd9953768eb	2024-05-17
https://git.kernel.org/stable/c/ad498539dda0816aadef384ec117bfea304c75c3	2024-05-17
https://git.kernel.org/stable/c/93aa5ccc44781bdfef1bf0bc4c2c292d45251312	2024-05-17
https://git.kernel.org/stable/c/1150606d47d711d5bfdf329a1a96ed7027085936	2024-05-17
https://git.kernel.org/stable/c/c885ab23206b1f1ba0731ffe7c9455c6a91db256	2024-05-17
https://git.kernel.org/stable/c/ea50941cd8c9f0b12f38b73d3b1bfeca660dd342	2024-05-17
https://git.kernel.org/stable/c/c214ed2a4dda35b308b0b28eed804d7ae66401f9	2024-03-26

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-36919	2024-09-24
https://bugzilla.redhat.com/show_bug.cgi?id=2284630	2024-09-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.314 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.314"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.276 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.276"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.217 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.217"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.159 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.159"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.91 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.91"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.31 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.31"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.8.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8.10"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.9 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9"		en		Affected