# CVE-2022-48715: linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe...

CVE-2022-48715 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48715, released June 20, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48715
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 20, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe  Running tests with a debug kernel shows that bnx2fc_recv_frame() is modifying the per_cpu lport stats counters in a non-mpsafe way.  Just boot a debug kernel and run the bnx2fc driver with the hardware enabled.  [ 1391.699147] BUG: using smp_processor_id() in preemptible [00000000] code: bnx2fc_ [ 1391.699160] caller is bnx2fc_recv_frame+0xbf9/0x1760 [bnx2fc] [ 1391.699174] CPU: 2 PID: 4355 Comm: bnx2fc_l2_threa Kdump: loaded Tainted: G    B [ 1391.699180] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013 [ 1391.699183] Call Trace: [ 1391.699188]  dump_stack_lvl+0x57/0x7d [ 1391.699198]  check_preemption_disabled+0xc8/0xd0 [ 1391.699205]  bnx2fc_recv_frame+0xbf9/0x1760 [bnx2fc] [ 1391.699215]  ? do_raw_spin_trylock+0xb5/0x180 [ 1391.699221]  ? bnx2fc_npiv_create_vports.isra.0+0x4e0/0x4e0 [bnx2fc] [ 1391.699229]  ? bnx2fc_l2_rcv_thread+0xb7/0x3a0 [bnx2fc] [ 1391.699240]  bnx2fc_l2_rcv_thread+0x1af/0x3a0 [bnx2fc] [ 1391.699250]  ? bnx2fc_ulp_init+0xc0/0xc0 [bnx2fc] [ 1391.699258]  kthread+0x364/0x420 [ 1391.699263]  ? _raw_spin_unlock_irq+0x24/0x50 [ 1391.699268]  ? set_kthread_struct+0x100/0x100 [ 1391.699273]  ret_from_fork+0x22/0x30  Restore the old get_cpu/put_cpu code with some modifications to reduce the size of the critical section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.10-1 | [DEBIAN-CVE-2022-48715](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48715.md) | Jun 20, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.10-1 | [DEBIAN-CVE-2022-48715](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48715.md) | Jun 20, 2024 |
| Linux | linux Debian 14 | 5.16.10-1 | [DEBIAN-CVE-2022-48715](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48715.md) | Jun 20, 2024 |

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