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CVE-2024-35997

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.90, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 21bfca822cfc1e71796124e93b46e0d9fa584401; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in c448a9fd50f77e8fb9156ff64848aa4295eb3003; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 5095b93021b899f54c9355bebf36d78854c33a22; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in b65fb50e04a95eec34a9d1bc138454a98a5578d8; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 0561b65fbd53d3e788c5b0222d9112ca016fd6a1; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 29e94f295bad5be59cf4271a93e22cdcf5536722; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 418c5575d56410c6e186ab727bf32ae32447d497; From 4a200c3b9a40242652b5734630bdd0bcf3aca75f · fixed in 9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e

  • Linux Linux

    3.8

  • KernelLinux

    From 3.8.0 · fixed in 4.19.313; From 4.20.0 · fixed in 5.4.275; From 5.5.0 · fixed in 5.10.216; From 5.11.0 · fixed in 5.15.158; From 5.16.0 · fixed in 6.1.90; From 6.2.0 · fixed in 6.6.30; From 6.7.0 · fixed in 6.8.9

References 8

git.kernel.org