| 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-2024-50028: thermal: core: Reference count the zone in thermal_zone_get_by_id() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| thermal: core: Reference count the zone in thermal_zone_get_by_id() |
| |
| There are places in the thermal netlink code where nothing prevents |
| the thermal zone object from going away while being accessed after it |
| has been returned by thermal_zone_get_by_id(). |
| |
| To address this, make thermal_zone_get_by_id() get a reference on the |
| thermal zone device object to be returned with the help of get_device(), |
| under thermal_list_lock, and adjust all of its callers to this change |
| with the help of the cleanup.h infrastructure. |
| |
| The Linux kernel CVE team has assigned CVE-2024-50028 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.9 with commit 1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00 and fixed in 6.11.4 with commit c95538b286efc6109c987e97a051bc7844ede802 |
| Issue introduced in 5.9 with commit 1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00 and fixed in 6.12 with commit a42a5839f400e929c489bb1b58f54596c4535167 |
| |
| 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-2024-50028 |
| 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/thermal/thermal_core.c |
| drivers/thermal/thermal_core.h |
| drivers/thermal/thermal_netlink.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/c95538b286efc6109c987e97a051bc7844ede802 |
| https://git.kernel.org/stable/c/a42a5839f400e929c489bb1b58f54596c4535167 |
