| 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-2024-26747: usb: roles: fix NULL pointer issue when put module's reference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: roles: fix NULL pointer issue when put module's reference |
| |
| In current design, usb role class driver will get usb_role_switch parent's |
| module reference after the user get usb_role_switch device and put the |
| reference after the user put the usb_role_switch device. However, the |
| parent device of usb_role_switch may be removed before the user put the |
| usb_role_switch. If so, then, NULL pointer issue will be met when the user |
| put the parent module's reference. |
| |
| This will save the module pointer in structure of usb_role_switch. Then, |
| we don't need to find module by iterating long relations. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26747 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 5.10.211 with commit e279bf8e51893e1fe160b3d8126ef2dd00f661e1 |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 5.15.150 with commit ef982fc41055fcebb361a92288d3225783d12913 |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 6.1.80 with commit 0158216805ca7e498d07de38840d2732166ae5fa |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 6.6.19 with commit 4b45829440b1b208948b39cc71f77a37a2536734 |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 6.7.7 with commit 01f82de440f2ab07c259b7573371e1c42e5565db |
| Issue introduced in 4.19 with commit 5c54fcac9a9de559b444ac63ec3cd82f1d157a0b and fixed in 6.8 with commit 1c9be13846c0b2abc2480602f8ef421360e1ad9e |
| Issue introduced in 4.18.12 with commit 7b169e33a3bc9040e06988b2bc15e83d2af80358 |
| |
| 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-2024-26747 |
| 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/roles/class.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/e279bf8e51893e1fe160b3d8126ef2dd00f661e1 |
| https://git.kernel.org/stable/c/ef982fc41055fcebb361a92288d3225783d12913 |
| https://git.kernel.org/stable/c/0158216805ca7e498d07de38840d2732166ae5fa |
| https://git.kernel.org/stable/c/4b45829440b1b208948b39cc71f77a37a2536734 |
| https://git.kernel.org/stable/c/01f82de440f2ab07c259b7573371e1c42e5565db |
| https://git.kernel.org/stable/c/1c9be13846c0b2abc2480602f8ef421360e1ad9e |
