Bug 2329923 (CVE-2024-53109)

Summary: CVE-2024-53109 kernel: nommu: pass NULL argument to vma_iter_prealloc()
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: 2329955    
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Description OSIDB Bzimport 2024-12-02 14:01:45 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nommu: pass NULL argument to vma_iter_prealloc()

When deleting a vma entry from a maple tree, it has to pass NULL to
vma_iter_prealloc() in order to calculate internal state of the tree, but
it passed a wrong argument.  As a result, nommu kernels crashed upon
accessing a vma iterator, such as acct_collect() reading the size of vma
entries after do_munmap().

This commit fixes this issue by passing a right argument to the
preallocation call.
Comment 1 Robb Gatica 2024-12-02 14:42:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024120247-CVE-2024-53109-2481@gregkh/T