Medium 5.5Published Jul 12, 2024

CVE-2024-39509HID: core: remove unnecessary WARN_ON() in implement()

Updated under an hour ago (2026-10-19 09:50 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: HID: core: remove unnecessary WARN_ON() 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 hid_warn() and value in question gets trimmed with: ... value &= m; ... WARN_ON 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 hid_output_report+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:hid_output_report+0x548/0x760 drivers/hid/hid-core.c:1863 ... Call Trace: <TASK> __usbhid_submit_report drivers/hid/usbhid/hid-core.c:591 [inline] usbhid_submit_report+0x43d/0x9e0 drivers/hid/usbhid/hid-core.c:636 hiddev_ioctl+0x138b/0x1f00 drivers/hid/usbhid/hiddev.c:726 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f ...

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 95d1c8951e5bd50bb89654a99a7012b1e75646bd before 955b3764671f3f157215194972d9c01a3a4bd316; from 95d1c8951e5bd50bb89654a99a7012b1e75646bd before f9db5fbeffb951cac3f0fb1c2eeffb79785399ca; 95d1c8951e5bd50bb89654a99a7012b1e75646bd builds before 33f6832798dd3297317901cc1db556ac3ae80c24; 95d1c8951e5bd50bb89654a99a7012b1e75646bd builds before 8bac61934cd563b073cd30b8cf6d5c758ab5ab26; from 95d1c8951e5bd50bb89654a99a7012b1e75646bd before bfd546fc7fd76076f81bf41b85b51ceda30949fd; 95d1c8951e5bd50bb89654a99a7012b1e75646bd builds before 30f76bc468b9b2cbbd5d3eb482661e3e4798893f; from 95d1c8951e5bd50bb89654a99a7012b1e75646bd before 655c6de2f215b61d0708db6b06305eee9bbfeba2; 95d1c8951e5bd50bb89654a99a7012b1e75646bd builds before 4aa2dcfbad538adf7becd0034a3754e1bd01b2b5	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.7 before 4.19.317; from 4.20 before 5.4.279; from 5.5 before 5.10.221; from 5.11 before 5.15.162; from 5.16 before 6.1.95; from 6.2 before 6.6.35; from 6.7 before 6.9.6; 6.10; and 1 more ranges	NVD

References

https://git.kernel.org/stable/c/955b3764671f3f157215194972d9c01a3a4bd316patch
https://git.kernel.org/stable/c/f9db5fbeffb951cac3f0fb1c2eeffb79785399capatch
https://git.kernel.org/stable/c/33f6832798dd3297317901cc1db556ac3ae80c24patch
https://git.kernel.org/stable/c/8bac61934cd563b073cd30b8cf6d5c758ab5ab26patch
https://git.kernel.org/stable/c/bfd546fc7fd76076f81bf41b85b51ceda30949fdpatch
https://git.kernel.org/stable/c/30f76bc468b9b2cbbd5d3eb482661e3e4798893fpatch
https://git.kernel.org/stable/c/655c6de2f215b61d0708db6b06305eee9bbfeba2patch
https://git.kernel.org/stable/c/4aa2dcfbad538adf7becd0034a3754e1bd01b2b5patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-355557.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.