Bug 2322310 (CVE-2024-50074)

Summary: CVE-2024-50074 kernel: parport: Proper fix for array out-of-bounds access
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, mcascell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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An out-of-bounds array access memory flaw was found in the Linux kernel. When snprintf() returns the would-be-printed size, not the actual output size, the length calculation can still go over the given limit and cause an overflow, resulting in loss of availability of the system.
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Bug Depends On: 2322390    
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Description OSIDB Bzimport 2024-10-29 01:01:43 UTC 
In the Linux kernel, the following vulnerability has been resolved:

parport: Proper fix for array out-of-bounds access

The recent fix for array out-of-bounds accesses replaced sprintf()
calls blindly with snprintf().  However, since snprintf() returns the
would-be-printed size, not the actually output size, the length
calculation can still go over the given limit.

Use scnprintf() instead of snprintf(), which returns the actually
output letters, for addressing the potential out-of-bounds access
properly.
Comment 1 Michal Findra 2024-10-29 07:40:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102935-CVE-2024-50074-d44d@gregkh/T
Comment 3 errata-xmlrpc 2025-05-13 08:31:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966