| 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-2023-52475: Input: powermate - fix use-after-free in powermate_config_complete |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Input: powermate - fix use-after-free in powermate_config_complete |
| |
| syzbot has found a use-after-free bug [1] in the powermate driver. This |
| happens when the device is disconnected, which leads to a memory free from |
| the powermate_device struct. When an asynchronous control message |
| completes after the kfree and its callback is invoked, the lock does not |
| exist anymore and hence the bug. |
| |
| Use usb_kill_urb() on pm->config to cancel any in-progress requests upon |
| device disconnection. |
| |
| [1] https://syzkaller.appspot.com/bug?extid=0434ac83f907a1dbdd1e |
| |
| The Linux kernel CVE team has assigned CVE-2023-52475 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.328 with commit 8677575c4f39d65bf0d719b5d20e8042e550ccb9 |
| Fixed in 4.19.297 with commit 67cace72606baf1758fd60feb358f4c6be92e1cc |
| Fixed in 5.4.259 with commit 5aa514100aaf59868d745196258269a16737c7bd |
| Fixed in 5.10.199 with commit cd2fbfd8b922b7fdd50732e47d797754ab59cb06 |
| Fixed in 5.15.136 with commit 6a4a396386404e62fb59bc3bde48871a64a82b4f |
| Fixed in 6.1.59 with commit 2efe67c581a2a6122b328d4bb6f21b3f36f40d46 |
| Fixed in 6.5.8 with commit e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8 |
| Fixed in 6.6 with commit 5c15c60e7be615f05a45cd905093a54b11f461bc |
| |
| 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-2023-52475 |
| 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/input/misc/powermate.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/8677575c4f39d65bf0d719b5d20e8042e550ccb9 |
| https://git.kernel.org/stable/c/67cace72606baf1758fd60feb358f4c6be92e1cc |
| https://git.kernel.org/stable/c/5aa514100aaf59868d745196258269a16737c7bd |
| https://git.kernel.org/stable/c/cd2fbfd8b922b7fdd50732e47d797754ab59cb06 |
| https://git.kernel.org/stable/c/6a4a396386404e62fb59bc3bde48871a64a82b4f |
| https://git.kernel.org/stable/c/2efe67c581a2a6122b328d4bb6f21b3f36f40d46 |
| https://git.kernel.org/stable/c/e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8 |
| https://git.kernel.org/stable/c/5c15c60e7be615f05a45cd905093a54b11f461bc |
