| 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-2024-43830: leds: trigger: Unregister sysfs attributes before calling deactivate() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| leds: trigger: Unregister sysfs attributes before calling deactivate() |
| |
| Triggers which have trigger specific sysfs attributes typically store |
| related data in trigger-data allocated by the activate() callback and |
| freed by the deactivate() callback. |
| |
| Calling device_remove_groups() after calling deactivate() leaves a window |
| where the sysfs attributes show/store functions could be called after |
| deactivation and then operate on the just freed trigger-data. |
| |
| Move the device_remove_groups() call to before deactivate() to close |
| this race window. |
| |
| This also makes the deactivation path properly do things in reverse order |
| of the activation path which calls the activate() callback before calling |
| device_add_groups(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-43830 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 4.19.320 with commit c3b7a650c8717aa89df318364609c86cbc040156 |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 5.4.282 with commit d1415125b701ef13370e2761f691ec632a5eb93a |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 5.10.224 with commit 09c1583f0e10c918855d6e7540a79461a353e5d6 |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 5.15.165 with commit 3fb6a9d67cfd812a547ac73ec02e1077c26c640d |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 6.1.103 with commit 734ba6437e80dfc780e9ee9d95f912392d12b5ea |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 6.6.44 with commit cb8aa9d2a4c8a15d6a43ccf901ef3d094aa60374 |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 6.10.3 with commit 0788a6f3523d3686a9eed5ea1e6fcce6841277b2 |
| Issue introduced in 4.19 with commit a7e7a3156300a7e1982b03cc9cb8fb0c86434c49 and fixed in 6.11 with commit c0dc9adf9474ecb7106e60e5472577375aedaed3 |
| |
| 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-2024-43830 |
| 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/leds/led-triggers.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/c3b7a650c8717aa89df318364609c86cbc040156 |
| https://git.kernel.org/stable/c/d1415125b701ef13370e2761f691ec632a5eb93a |
| https://git.kernel.org/stable/c/09c1583f0e10c918855d6e7540a79461a353e5d6 |
| https://git.kernel.org/stable/c/3fb6a9d67cfd812a547ac73ec02e1077c26c640d |
| https://git.kernel.org/stable/c/734ba6437e80dfc780e9ee9d95f912392d12b5ea |
| https://git.kernel.org/stable/c/cb8aa9d2a4c8a15d6a43ccf901ef3d094aa60374 |
| https://git.kernel.org/stable/c/0788a6f3523d3686a9eed5ea1e6fcce6841277b2 |
| https://git.kernel.org/stable/c/c0dc9adf9474ecb7106e60e5472577375aedaed3 |
