CVE-2025-38671 (GCVE-0-2025-38671)
Vulnerability from cvelistv5
Published
2025-08-22 16:03
Modified
2025-11-03 17:40
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: i2c: qup: jump out of the loop in case of timeout Original logic only sets the return value but doesn't jump out of the loop if the bus is kept active by a client. This is not expected. A malicious or buggy i2c client can hang the kernel in this case and should be avoided. This is observed during a long time test with a PCA953x GPIO extender. Fix it by changing the logic to not only sets the return value, but also jumps out of the loop and return to the caller with -ETIMEDOUT.
References
Impacted products
Vendor Product Version
Linux Linux Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
Version: fbfab1ab065879370541caf0e514987368eb41b2
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: qup: jump out of the loop in case of timeout\n\nOriginal logic only sets the return value but doesn\u0027t jump out of the\nloop if the bus is kept active by a client. This is not expected. A\nmalicious or buggy i2c client can hang the kernel in this case and\nshould be avoided. This is observed during a long time test with a\nPCA953x GPIO extender.\n\nFix it by changing the logic to not only sets the return value, but also\njumps out of the loop and return to the caller with -ETIMEDOUT."
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    "dateReserved": "2025-04-16T04:51:24.031Z",
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    "state": "PUBLISHED"
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