scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put() The bnx2fc_destroy() functions are removing the interface before calling destroy_work. This results multiple WARNings from sysfs_remove_group() as the controller rport device attributes are removed too early. Replace the fcoe_port's destroy_work queue. It's not needed. The problem is easily reproducible with the following steps. Example: $ dmesg -w & $ systemctl enable --now fcoe $ fipvlan -s -c ens2f1 $ fcoeadm -d ens2f1.802 [ 583.464488] host2: libfc: Link down on port (7500a1) [ 583.472651] bnx2fc: 7500a1 - rport not created Yet!! [ 583.490468] ------------[ cut here ]------------ [ 583.538725] sysfs group 'power' not found for kobject 'rport-2:0-0' [ 583.568814] WARNING: CPU: 3 PID: 192 at fs/sysfs/group.c:279 sysfs_remove_group+0x6f/0x80 [ 583.607130] Modules linked in: dm_service_time 8021q garp mrp stp llc bnx2fc cnic uio rpcsec_gss_krb5 auth_rpcgss nfsv4 ... [ 583.942994] CPU: 3 PID: 192 Comm: kworker/3:2 Kdump: loaded Not tainted 5.14.0-39.el9.x86_64 #1 [ 583.984105] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013 [ 584.016535] Workqueue: fc_wq_2 fc_rport_final_delete [scsi_transport_fc] [ 584.050691] RIP: 0010:sysfs_remove_group+0x6f/0x80 [ 584.074725] Code: ff 5b 48 89 ef 5d 41 5c e9 ee c0 ff ff 48 89 ef e8 f6 b8 ff ff eb d1 49 8b 14 24 48 8b 33 48 c7 c7 ... [ 584.162586] RSP: 0018:ffffb567c15afdc0 EFLAGS: 00010282 [ 584.188225] RAX: 0000000000000000 RBX: ffffffff8eec4220 RCX: 0000000000000000 [ 584.221053] RDX: ffff8c1586ce84c0 RSI: ffff8c1586cd7cc0 RDI: ffff8c1586cd7cc0 [ 584.255089] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb567c15afc00 [ 584.287954] R10: ffffb567c15afbf8 R11: ffffffff8fbe7f28 R12: ffff8c1486326400 [ 584.322356] R13: ffff8c1486326480 R14: ffff8c1483a4a000 R15: 0000000000000004 [ 584.355379] FS: 0000000000000000(0000) GS:ffff8c1586cc0000(0000) knlGS:0000000000000000 [ 584.394419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 584.421123] CR2: 00007fe95a6f7840 CR3: 0000000107674002 CR4: 00000000000606e0 [ 584.454888] Call Trace: [ 584.466108] device_del+0xb2/0x3e0 [ 584.481701] device_unregister+0x13/0x60 [ 584.501306] bsg_unregister_queue+0x5b/0x80 [ 584.522029] bsg_remove_queue+0x1c/0x40 [ 584.541884] fc_rport_final_delete+0xf3/0x1d0 [scsi_transport_fc] [ 584.573823] process_one_work+0x1e3/0x3b0 [ 584.592396] worker_thread+0x50/0x3b0 [ 584.609256] ? rescuer_thread+0x370/0x370 [ 584.628877] kthread+0x149/0x170 [ 584.643673] ? set_kthread_struct+0x40/0x40 [ 584.662909] ret_from_fork+0x22/0x30 [ 584.680002] ---[ end trace 53575ecefa942ece ]---
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.2 and later | 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17 | Patch available | CNA |
- Linux VendorLinux Affected 3.2 and later Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.2 to before 4.4.302; 4.5 to before 4.9.300; 4.10 to before 4.14.265; 4.15 to before 4.19.228; 4.20 to before 5.4.176; 5.5 to before 5.10.96; 5.11 to before 5.15.19; 5.16 to before 5.16.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* | 5.17 rc1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.2 to before 4.4.302; 4.5 to before 4.9.300; 4.10 to before 4.14.265; 4.15 to before 4.19.228; 4.20 to before 5.4.176; 5.5 to before 5.10.96; 5.11 to before 5.15.19; 5.16 to before 5.16.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* Versions 5.17 rc1 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48758
- 2026-10-03 Alias added: GHSA-2x6c-642q-vfcc
References
Patch 9
- https://git.kernel.org/stable/c/2a12fe8248a38437b95b942bbe85aced72e6e2eb
- https://git.kernel.org/stable/c/262550f29c750f7876b6ed1244281e72b64ebffb
- https://git.kernel.org/stable/c/c93a290c862ccfa404e42d7420565730d67cbff9
- https://git.kernel.org/stable/c/de6336b17a1376db1c0f7a528cce8783db0881c0
- https://git.kernel.org/stable/c/bf2bd892a0cb14dd2d21f2c658f4b747813be311
- https://git.kernel.org/stable/c/00849de10f798a9538242824a51b1756e7110754
- https://git.kernel.org/stable/c/b11e34f7bab21df36f02a5e54fb69e858c09a65d
- https://git.kernel.org/stable/c/ace7b6ef41251c5fe47f629a9a922382fb7b0a6b
- https://git.kernel.org/stable/c/847f9ea4c5186fdb7b84297e3eeed9e340e83fce
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Sources
- CVE-2022-48758 · CVE Program
- CVE-2022-48758 · NVD
- FIRST EPSS
- GHSA-2x6c-642q-vfcc · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48758 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences