| 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-2022-49118: scsi: hisi_sas: Free irq vectors in order for v3 HW |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: hisi_sas: Free irq vectors in order for v3 HW |
| |
| If the driver probe fails to request the channel IRQ or fatal IRQ, the |
| driver will free the IRQ vectors before freeing the IRQs in free_irq(), |
| and this will cause a kernel BUG like this: |
| |
| ------------[ cut here ]------------ |
| kernel BUG at drivers/pci/msi.c:369! |
| Internal error: Oops - BUG: 0 [#1] PREEMPT SMP |
| Call trace: |
| free_msi_irqs+0x118/0x13c |
| pci_disable_msi+0xfc/0x120 |
| pci_free_irq_vectors+0x24/0x3c |
| hisi_sas_v3_probe+0x360/0x9d0 [hisi_sas_v3_hw] |
| local_pci_probe+0x44/0xb0 |
| work_for_cpu_fn+0x20/0x34 |
| process_one_work+0x1d0/0x340 |
| worker_thread+0x2e0/0x460 |
| kthread+0x180/0x190 |
| ret_from_fork+0x10/0x20 |
| ---[ end trace b88990335b610c11 ]--- |
| |
| So we use devm_add_action() to control the order in which we free the |
| vectors. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49118 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.5 with commit 47caad1577cd7a39e2048c5e4edbce4b863dc12b and fixed in 5.10.111 with commit 224903cc60d045576393c3b16907742f23e6c740 |
| Issue introduced in 4.5 with commit 47caad1577cd7a39e2048c5e4edbce4b863dc12b and fixed in 5.15.34 with commit f05a0d8de2ea49af36821a20b0b501e20ced937e |
| Issue introduced in 4.5 with commit 47caad1577cd7a39e2048c5e4edbce4b863dc12b and fixed in 5.16.20 with commit 8b6eab9d683bae7f88dc894b8c851f866032301c |
| Issue introduced in 4.5 with commit 47caad1577cd7a39e2048c5e4edbce4b863dc12b and fixed in 5.17.3 with commit b4cc04fa8f1fc3816c8494d77abab3f72b9d2292 |
| Issue introduced in 4.5 with commit 47caad1577cd7a39e2048c5e4edbce4b863dc12b and fixed in 5.18 with commit 554fb72ee34f4732c7f694f56c3c6e67790352a0 |
| |
| 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-2022-49118 |
| 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/hisi_sas/hisi_sas_v3_hw.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/224903cc60d045576393c3b16907742f23e6c740 |
| https://git.kernel.org/stable/c/f05a0d8de2ea49af36821a20b0b501e20ced937e |
| https://git.kernel.org/stable/c/8b6eab9d683bae7f88dc894b8c851f866032301c |
| https://git.kernel.org/stable/c/b4cc04fa8f1fc3816c8494d77abab3f72b9d2292 |
| https://git.kernel.org/stable/c/554fb72ee34f4732c7f694f56c3c6e67790352a0 |
