| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-48715: scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48715 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 4.9.300 with commit 3a345198a7c2d1db2526dc60b77052f75de019d3 |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 4.14.265 with commit 471085571f926a1fe6b1bed095638994dbf23990 |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 4.19.228 with commit 003bcee66a8f0e76157eb3af369c173151901d97 |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 5.4.178 with commit 53e4f71763c61a557283eb43301efd671922d1e8 |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 5.10.99 with commit ec4334152dae175dbd8fd5bde1d2139bbe7b42d0 |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 5.15.22 with commit 2f5a1ac68bdf2899ce822ab845081922ea8c588e |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 5.16.8 with commit 2d24336c7214b281b51860e54783dfc65f1248df |
| Issue introduced in 3.16 with commit d576a5e80cd07ea7049f8fd7b303c14df7b5d7d2 and fixed in 5.17 with commit 936bd03405fc83ba039d42bc93ffd4b88418f1d3 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-48715 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/scsi/bnx2fc/bnx2fc_fcoe.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/3a345198a7c2d1db2526dc60b77052f75de019d3 |
| https://git.kernel.org/stable/c/471085571f926a1fe6b1bed095638994dbf23990 |
| https://git.kernel.org/stable/c/003bcee66a8f0e76157eb3af369c173151901d97 |
| https://git.kernel.org/stable/c/53e4f71763c61a557283eb43301efd671922d1e8 |
| https://git.kernel.org/stable/c/ec4334152dae175dbd8fd5bde1d2139bbe7b42d0 |
| https://git.kernel.org/stable/c/2f5a1ac68bdf2899ce822ab845081922ea8c588e |
| https://git.kernel.org/stable/c/2d24336c7214b281b51860e54783dfc65f1248df |
| https://git.kernel.org/stable/c/936bd03405fc83ba039d42bc93ffd4b88418f1d3 |
