CVE - CVE-2024-41055

CVE-ID
CVE-2024-41055	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982 URL:https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982 MISC:https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7 URL:https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7 MISC:https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e URL:https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e MISC:https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509 URL:https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509 MISC:https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63 URL:https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63 MISC:https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503 URL:https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503
Assigning CNA
kernel.org
Date Record Created
20240712	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240712)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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