CVE-2024-39509: HID: core: remove unnecessary WARN_ON() in implement()
In the Linux kernel, the following vulnerability has been resolved:
HID: core: remove unnecessary WARNON() in implement()
Syzkaller hit a warning [1] in a call to implement() when trying to write a value into a field of smaller size in an output report.
Since implement() already has a warn message printed out with the help of hidwarn() and value in question gets trimmed with: ... value &= m; ... WARNON may be considered superfluous. Remove it to suppress future syzkaller triggers.
[1] WARNING: CPU: 0 PID: 5084 at drivers/hid/hid-core.c:1451 implement drivers/hid/hid-core.c:1451 [inline] WARNING: CPU: 0 PID: 5084 at drivers/hid/hid-core.c:1451 hidoutputreport+0x548/0x760 drivers/hid/hid-core.c:1863 Modules linked in: CPU: 0 PID: 5084 Comm: syz-executor424 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:implement drivers/hid/hid-core.c:1451 [inline] RIP: 0010:hidoutputreport+0x548/0x760 drivers/hid/hid-core.c:1863 ... Call Trace: <TASK> usbhidsubmitreport drivers/hid/usbhid/hid-core.c:591 [inline] usbhidsubmitreport+0x43d/0x9e0 drivers/hid/usbhid/hid-core.c:636 hiddevioctl+0x138b/0x1f00 drivers/hid/usbhid/hiddev.c:726 vfsioctl fs/ioctl.c:51 [inline] dosysioctl fs/ioctl.c:904 [inline] sesysioctl+0xfc/0x170 fs/ioctl.c:890 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xf5/0x240 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f ...
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-39509?
CVE-2024-39509 has not been assigned a specific severity rating but it addresses an unnecessary warning in the Linux kernel.
How do I fix CVE-2024-39509?
To fix CVE-2024-39509, update to the patched versions of the Linux kernel, including 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.13-1.
Which systems are affected by CVE-2024-39509?
CVE-2024-39509 affects specific versions of the Linux kernel found in Debian distributions that utilize the packages listed.
What is the nature of the issue in CVE-2024-39509?
CVE-2024-39509 involves the removal of an unnecessary WARN_ON() within the implement() function of the Linux kernel's HID subsystem.
Is there a known exploit for CVE-2024-39509?
There is no publicly known exploit for CVE-2024-39509 as it deals with a code warning rather than a direct security vulnerability.