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CVE-2024-41055

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CVE-2024-41055

Published: Jul 29, 2024

Modified: May 23, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.

VendorProductVersions

Linux

Linux

affected
90ad17575d26874287271127d43ef3c2af876cea - < 0100aeb8a12d51950418e685f879cc80cb8e5982
affected
b448de2459b6d62a53892487ab18b7d823ff0529 - < bc17f2377818dca643a74499c3f5333500c90503
affected
68ed9e33324021e9d6b798e9db00ca3093d2012a - < 941e816185661bf2b44b488565d09444ae316509
affected
70064241f2229f7ba7b9599a98f68d9142e81a97 - < 797323d1cf92d09b7a017cfec576d9babf99cde7
affected
5ec8e8ea8b7783fab150cf86404fc38cb4db8800 - < adccdf702b4ea913ded5ff512239e382d7473b63

+7 more versions

Linux

Linux

affected
6.8
unaffected
0 - < 6.8
unaffected
5.10.222 - <= 5.10.*
unaffected
5.15.163 - <= 5.15.*
unaffected
6.1.100 - <= 6.1.*

+3 more versions

References

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