CVE-2024-35997

MEDIUM
Published May 20, 2024 Modified May 12, 2026 CWE-667

Description

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.

Is your site exposed to CVE-2024-35997?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-667 CWE-667

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1 https://git.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401 https://git.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722 https://git.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497 https://git.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22 https://git.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e https://git.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8 https://git.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003 https://git.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1 https://git.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401 https://git.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722 https://git.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497 https://git.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22 https://git.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e https://git.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8 https://git.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003

Frequently Asked Questions

What is CVE-2024-35997? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-35997? +
CVE-2024-35997 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-35997? +
CVE-2024-35997 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-35997? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-1221

A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host …
CVE-2025-10151

Improper locking vulnerability in Softing Industrial Automation GmbH gateways allows infected memory and/or resource leak exposure.This issue affects smartLink HW-PN: …
CVE-2026-54906 9.8

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLock#release_write_lock does not verify that the calling thread acquired …
CVE-2026-43215 8.8

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to …
CVE-2026-31629 8.8

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCP_CLOSED checks In nfc_llcp_recv_hdlc() …
CVE-2026-62426 8.8

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2024-35997 — free, no signup required.