Medium 5.5Published May 20, 2024

CVE-2024-35997HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up

Updated under an hour ago (Oct 26, 2026, 2:50 PM ET)

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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: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up The flag I2C_HID_READ_PENDING is used to serialize I2C operations. However, this is not necessary, because I2C core already has its own locking for that. More importantly, this flag can cause a lock-up: if the flag is set in i2c_hid_xfer() and an interrupt happens, the interrupt handler (i2c_hid_irq) will check this flag and return immediately without doing anything, then the interrupt handler will be invoked again in an infinite loop. Since interrupt handler is an RT task, it takes over the CPU and the flag-clearing task never gets scheduled, thus we have a lock-up. Delete this unnecessary flag.

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 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 21bfca822cfc1e71796124e93b46e0d9fa584401; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before c448a9fd50f77e8fb9156ff64848aa4295eb3003; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 5095b93021b899f54c9355bebf36d78854c33a22; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before b65fb50e04a95eec34a9d1bc138454a98a5578d8; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 0561b65fbd53d3e788c5b0222d9112ca016fd6a1; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 29e94f295bad5be59cf4271a93e22cdcf5536722; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 418c5575d56410c6e186ab727bf32ae32447d497; from 4a200c3b9a40242652b5734630bdd0bcf3aca75f before 9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e	CNA record
linux linux_kernel linux:linux_kernel	from 4a200c3b9a40 before c448a9fd50f7	CISA ADP
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 3.8 before 4.19.313; from 4.20 before 5.4.275; from 5.5 before 5.10.216; from 5.11 before 5.15.158; from 5.16 before 6.1.90; from 6.2 before 6.6.30; from 6.7 before 6.8.9	NVD

References

References

https://git.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401	patch
https://git.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003	patch
https://git.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22	patch
https://git.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8	patch
https://git.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1	patch
https://git.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722	patch
https://git.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497	patch
https://git.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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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.