| From bippy-7c5fe7eed585 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-2025-21917: usb: renesas_usbhs: Flush the notify_hotplug_work |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: renesas_usbhs: Flush the notify_hotplug_work |
| |
| When performing continuous unbind/bind operations on the USB drivers |
| available on the Renesas RZ/G2L SoC, a kernel crash with the message |
| "Unable to handle kernel NULL pointer dereference at virtual address" |
| may occur. This issue points to the usbhsc_notify_hotplug() function. |
| |
| Flush the delayed work to avoid its execution when driver resources are |
| unavailable. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21917 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 5.4.291 with commit 4cd847a7b630a85493d0294ad9542c21aafaa246 |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 5.10.235 with commit 394965f90454d6f00fe11879142b720c6c1a872e |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 5.15.179 with commit 3248c1f833f924246cb98ce7da4569133c1b2292 |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 6.1.131 with commit 4ca078084cdd5f32d533311d6a0b63a60dcadd41 |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 6.6.83 with commit d50f5c0cd949593eb9a3d822b34d7b50046a06b7 |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 6.12.19 with commit e5aac1c9b2974636db7ce796ffa6de88fa08335e |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 6.13.7 with commit 830818c8e70c0364e377f0c243b28061ef7967eb |
| Issue introduced in 3.0 with commit bc57381e634782009b1cb2e86b18013699ada576 and fixed in 6.14 with commit 552ca6b87e3778f3dd5b87842f95138162e16c82 |
| |
| 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-2025-21917 |
| 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/renesas_usbhs/common.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/4cd847a7b630a85493d0294ad9542c21aafaa246 |
| https://git.kernel.org/stable/c/394965f90454d6f00fe11879142b720c6c1a872e |
| https://git.kernel.org/stable/c/3248c1f833f924246cb98ce7da4569133c1b2292 |
| https://git.kernel.org/stable/c/4ca078084cdd5f32d533311d6a0b63a60dcadd41 |
| https://git.kernel.org/stable/c/d50f5c0cd949593eb9a3d822b34d7b50046a06b7 |
| https://git.kernel.org/stable/c/e5aac1c9b2974636db7ce796ffa6de88fa08335e |
| https://git.kernel.org/stable/c/830818c8e70c0364e377f0c243b28061ef7967eb |
| https://git.kernel.org/stable/c/552ca6b87e3778f3dd5b87842f95138162e16c82 |
