CVE-2022-48715 scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe

2024-06-2011:13:08

Linux

www.cve.org

linux kernel vulnerability

0.0004 Low

EPSS

Percentile

13.1%

JSON

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.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/scsi/bnx2fc/bnx2fc_fcoe.c"
    ],
    "versions": [
      {
        "version": "d576a5e80cd0",
        "lessThan": "3a345198a7c2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "471085571f92",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "003bcee66a8f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "53e4f71763c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "ec4334152dae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "2f5a1ac68bdf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "2d24336c7214",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d576a5e80cd0",
        "lessThan": "936bd03405fc",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/scsi/bnx2fc/bnx2fc_fcoe.c"
    ],
    "versions": [
      {
        "version": "3.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.16",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.300",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.265",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.228",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.178",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.99",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.22",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16.8",
        "lessThanOrEqual": "5.16.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]