Improper Locking Affecting kernel-debug-devel package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELDEBUGDEVEL-6963426
- published 21 May 2024
- disclosed 20 May 2024
Introduced: 20 May 2024
CVE-2024-35997 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-debug-devel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-35997
- 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://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html