Bug 2327351 (CVE-2024-53076)

Summary: CVE-2024-53076 kernel: iio: gts-helper: Fix memory leaks for the error path of iio_gts_build_avail_scale_table()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2327471    
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Description OSIDB Bzimport 2024-11-19 18:02:29 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iio: gts-helper: Fix memory leaks for the error path of iio_gts_build_avail_scale_table()

If per_time_scales[i] or per_time_gains[i] kcalloc fails in the for loop
of iio_gts_build_avail_scale_table(), the err_free_out will fail to call
kfree() each time when i is reduced to 0, so all the per_time_scales[0]
and per_time_gains[0] will not be freed, which will cause memory leaks.

Fix it by checking if i >= 0.
Comment 1 Robb Gatica 2024-11-19 21:13:53 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024111925-CVE-2024-53076-713e@gregkh/T