| 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-2024-56714: ionic: no double destroy workqueue |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ionic: no double destroy workqueue |
| |
| There are some FW error handling paths that can cause us to |
| try to destroy the workqueue more than once, so let's be sure |
| we're checking for that. |
| |
| The case where this popped up was in an AER event where the |
| handlers got called in such a way that ionic_reset_prepare() |
| and thus ionic_dev_teardown() got called twice in a row. |
| The second time through the workqueue was already destroyed, |
| and destroy_workqueue() choked on the bad wq pointer. |
| |
| We didn't hit this in AER handler testing before because at |
| that time we weren't using a private workqueue. Later we |
| replaced the use of the system workqueue with our own private |
| workqueue but hadn't rerun the AER handler testing since then. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56714 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11 with commit 9e25450da7006cd6f425248a5b38dad4adb3c981 and fixed in 6.12.7 with commit 13355dd37e22edbcb99c599f783233188740a650 |
| Issue introduced in 6.11 with commit 9e25450da7006cd6f425248a5b38dad4adb3c981 and fixed in 6.13 with commit 746e6ae2e202b062b9deee7bd86d94937997ecd7 |
| |
| 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-2024-56714 |
| 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/net/ethernet/pensando/ionic/ionic_dev.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/13355dd37e22edbcb99c599f783233188740a650 |
| https://git.kernel.org/stable/c/746e6ae2e202b062b9deee7bd86d94937997ecd7 |
