CVE-2024-40965: i2c: lpi2c: Avoid calling clk_get_rate during transfer
First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i2c: lpi2c: Avoid calling clk_get_rate during transfer Instead of repeatedly calling clk_get_rate for each transfer, lock the clock rate and cache the value. A deadlock has been observed while adding tlv320aic32x4 audio codec to the system. When this clock provider adds its clock, the clk mutex is locked already, it needs to access i2c, which in return needs the mutex for clk_get_rate as well.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.9.7 | 6.9.7 |
| redhat/kernel | <6.10 | 6.10 |
| Linux Kernel | <6.9.7 | |
| debian/linux | <=5.10.223-1<=5.10.234-1<=6.1.129-1<=6.1.133-1 | 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/2b42e9587a7a9c7b824e0feb92958f258263963e
- https://git.kernel.org/stable/c/4268254a39484fc11ba991ae148bacbe75d9cc0a
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2297549
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40965
- https://nvd.nist.gov/vuln/detail/CVE-2024-40965
- https://launchpad.net/bugs/cve/CVE-2024-40965
- https://security-tracker.debian.org/tracker/CVE-2024-40965
- https://ubuntu.com/security/CVE-2024-40965
- https://git.kernel.org/linus/4268254a39484fc11ba991ae148bacbe75d9cc0a
- https://git.kernel.org/stable/c/d038693e08adf9c162c6377800495e4f5a2df045
Frequently Asked Questions
What is the severity of CVE-2024-40965?
CVE-2024-40965 has been classified as a medium severity vulnerability.
How do I fix CVE-2024-40965?
To fix CVE-2024-40965, update to the appropriate kernel versions specified in the remediation details, such as kernel 6.9.7 or kernel 6.10.
Which systems are affected by CVE-2024-40965?
CVE-2024-40965 affects specific versions of the Linux kernel across various distributions including Red Hat and Debian.
What type of vulnerability is CVE-2024-40965?
CVE-2024-40965 is a deadlock vulnerability related to clock rate management in the Linux kernel.
Is CVE-2024-40965 exploitability easy or difficult?
The exploitability of CVE-2024-40965 can depend on specific use cases, but it poses a risk of deadlock during operation.
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