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.
[
{
"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"
}
]
}
]
git.kernel.org/stable/c/003bcee66a8f0e76157eb3af369c173151901d97
git.kernel.org/stable/c/2d24336c7214b281b51860e54783dfc65f1248df
git.kernel.org/stable/c/2f5a1ac68bdf2899ce822ab845081922ea8c588e
git.kernel.org/stable/c/3a345198a7c2d1db2526dc60b77052f75de019d3
git.kernel.org/stable/c/471085571f926a1fe6b1bed095638994dbf23990
git.kernel.org/stable/c/53e4f71763c61a557283eb43301efd671922d1e8
git.kernel.org/stable/c/936bd03405fc83ba039d42bc93ffd4b88418f1d3
git.kernel.org/stable/c/ec4334152dae175dbd8fd5bde1d2139bbe7b42d0