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CVE-2024-41055
MEDIUM5.5
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.
CVE Details
CVSS v3.1 Score5.5
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorLOCAL
ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
Published7/29/2024
Last Modified11/3/2025
Sourcenvd
Honeypot Sightings0
Affected Products
linux:linux_kernel
Weaknesses (CWE)
CWE-476
References
https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982(af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7(af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e(af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509(af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63(af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503(af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html(af854a3a-2127-422b-91ae-364da2661108)
IOC Correlations
No correlations recorded
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