Bug 2332111 (CVE-2024-12455)

Summary: CVE-2024-12455 glibc: glibc in Fedora 41 ships a broken getrandom/arc4random for ppc64le platform
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ashankar, codonell, dj, fweimer, pfrankli
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Fedora 41's glibc implementation of getrandom() for ppc64le. This issue occurs due to an implementation error for a vDSO indirect function call and the way the return of success and possible error codes are signaled on this platform. As a result, getrandom() fails to produce randomness or may end up causing an out-of-bounds write. As the attacker has no full control over where the out-of-bounds write may happen, the most likely result is smaller data corruption or a Denial-of-Service of the affected application. This issue is specific for glibc-2.40-12.fc41 as shipped with Fedora 41 only.
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Bug Depends On: 2332112    
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Description OSIDB Bzimport 2024-12-12 17:22:34 UTC 
Fedora 41 ships a broken glibc getrandom/arc4random implementation which may fail to produce randomness or may result in a out-of-bounds write. This vulnerability affects only glibc-2.40-12.fc41 version for ppc64le architecture.