| 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-2024-26653: usb: misc: ljca: Fix double free in error handling path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: misc: ljca: Fix double free in error handling path |
| |
| When auxiliary_device_add() returns error and then calls |
| auxiliary_device_uninit(), callback function ljca_auxdev_release |
| calls kfree(auxdev->dev.platform_data) to free the parameter data |
| of the function ljca_new_client_device. The callers of |
| ljca_new_client_device shouldn't call kfree() again |
| in the error handling path to free the platform data. |
| |
| Fix this by cleaning up the redundant kfree() in all callers and |
| adding kfree() the passed in platform_data on errors which happen |
| before auxiliary_device_init() succeeds . |
| |
| The Linux kernel CVE team has assigned CVE-2024-26653 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit acd6199f195d6de814ac4090ce0864a613b1580e and fixed in 6.7.12 with commit 420babea4f1881a7c4ea22a8e218b8c6895d3f21 |
| Issue introduced in 6.7 with commit acd6199f195d6de814ac4090ce0864a613b1580e and fixed in 6.8.3 with commit 8a9f653cc852677003c23ee8075e3ed8fb4743c9 |
| Issue introduced in 6.7 with commit acd6199f195d6de814ac4090ce0864a613b1580e and fixed in 6.9 with commit 7c9631969287a5366bc8e39cd5abff154b35fb80 |
| |
| 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-2024-26653 |
| 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/usb/misc/usb-ljca.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/420babea4f1881a7c4ea22a8e218b8c6895d3f21 |
| https://git.kernel.org/stable/c/8a9f653cc852677003c23ee8075e3ed8fb4743c9 |
| https://git.kernel.org/stable/c/7c9631969287a5366bc8e39cd5abff154b35fb80 |
