| 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-2024-50025: scsi: fnic: Move flush_work initialization out of if block |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: fnic: Move flush_work initialization out of if block |
| |
| After commit 379a58caa199 ("scsi: fnic: Move fnic_fnic_flush_tx() to a |
| work queue"), it can happen that a work item is sent to an uninitialized |
| work queue. This may has the effect that the item being queued is never |
| actually queued, and any further actions depending on it will not |
| proceed. |
| |
| The following warning is observed while the fnic driver is loaded: |
| |
| kernel: WARNING: CPU: 11 PID: 0 at ../kernel/workqueue.c:1524 __queue_work+0x373/0x410 |
| kernel: <IRQ> |
| kernel: queue_work_on+0x3a/0x50 |
| kernel: fnic_wq_copy_cmpl_handler+0x54a/0x730 [fnic 62fbff0c42e7fb825c60a55cde2fb91facb2ed24] |
| kernel: fnic_isr_msix_wq_copy+0x2d/0x60 [fnic 62fbff0c42e7fb825c60a55cde2fb91facb2ed24] |
| kernel: __handle_irq_event_percpu+0x36/0x1a0 |
| kernel: handle_irq_event_percpu+0x30/0x70 |
| kernel: handle_irq_event+0x34/0x60 |
| kernel: handle_edge_irq+0x7e/0x1a0 |
| kernel: __common_interrupt+0x3b/0xb0 |
| kernel: common_interrupt+0x58/0xa0 |
| kernel: </IRQ> |
| |
| It has been observed that this may break the rediscovery of Fibre |
| Channel devices after a temporary fabric failure. |
| |
| This patch fixes it by moving the work queue initialization out of |
| an if block in fnic_probe(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-50025 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit 379a58caa19930e010b7efa1c1f3b9411d3d2ca3 and fixed in 6.11.4 with commit 6b7836b80061bf1accc5d78b12bc086aed252388 |
| Issue introduced in 6.8 with commit 379a58caa19930e010b7efa1c1f3b9411d3d2ca3 and fixed in 6.12 with commit f30e5f77d2f205ac14d09dec40fd4bb76712f13d |
| |
| 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-2024-50025 |
| 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/fnic/fnic_main.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/6b7836b80061bf1accc5d78b12bc086aed252388 |
| https://git.kernel.org/stable/c/f30e5f77d2f205ac14d09dec40fd4bb76712f13d |
