CVE-2024-35997

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

State: Published
Severity: Not scored
Published: May 20, 2024
Updated: Oct 15, 2026
Reserved: May 17, 2024

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 21bfca822cfc1e71796124e93b46e0d9fa584401Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before c448a9fd50f77e8fb9156ff64848aa4295eb3003Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 5095b93021b899f54c9355bebf36d78854c33a22Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before b65fb50e04a95eec34a9d1bc138454a98a5578d8Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 0561b65fbd53d3e788c5b0222d9112ca016fd6a1Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 29e94f295bad5be59cf4271a93e22cdcf5536722Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 418c5575d56410c6e186ab727bf32ae32447d497Affected 4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 9c0f59e47a90c54d0153f8ddc0f80d7a36207d0eAffected
LinuxLinux	3.8Affected before 3.8Not affected 4.19.313 through 4.19.Not affected 5.4.275 through 5.4.Not affected 5.10.216 through 5.10.Not affected 5.15.158 through 5.15.Not affected 6.1.90 through 6.1.Not affected 6.6.30 through 6.6.Not affected 6.8.9 through 6.8.*Not affected 6.9 and laterNot affected

Product

Versions

LinuxLinux

4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 21bfca822cfc1e71796124e93b46e0d9fa584401Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before c448a9fd50f77e8fb9156ff64848aa4295eb3003Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 5095b93021b899f54c9355bebf36d78854c33a22Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before b65fb50e04a95eec34a9d1bc138454a98a5578d8Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 0561b65fbd53d3e788c5b0222d9112ca016fd6a1Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 29e94f295bad5be59cf4271a93e22cdcf5536722Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 418c5575d56410c6e186ab727bf32ae32447d497Affected
4a200c3b9a40242652b5734630bdd0bcf3aca75f to before 9c0f59e47a90c54d0153f8ddc0f80d7a36207d0eAffected

LinuxLinux

3.8Affected
before 3.8Not affected
4.19.313 through 4.19.*Not affected
5.4.275 through 5.4.*Not affected
5.10.216 through 5.10.*Not affected
5.15.158 through 5.15.*Not affected
6.1.90 through 6.1.*Not affected
6.6.30 through 6.6.*Not affected
6.8.9 through 6.8.*Not affected
6.9 and laterNot affected

References

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