CVE - CVE-2024-36891

CVE-ID
CVE-2024-36891	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: maple_tree: fix mas_empty_area_rev() null pointer dereference Currently the code calls mas_start() followed by mas_data_end() if the maple state is MA_START, but mas_start() may return with the maple state node == NULL. This will lead to a null pointer dereference when checking information in the NULL node, which is done in mas_data_end(). Avoid setting the offset if there is no node by waiting until after the maple state is checked for an empty or single entry state. A user could trigger the events to cause a kernel oops by unmapping all vmas to produce an empty maple tree, then mapping a vma that would cause the scenario described above.
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/6c9c7c1e63b198a8b979ad963eb21410f10ccb00 URL:https://git.kernel.org/stable/c/6c9c7c1e63b198a8b979ad963eb21410f10ccb00 MISC:https://git.kernel.org/stable/c/883e5d542bbdddbddeba60250cb482baf3ae2415 URL:https://git.kernel.org/stable/c/883e5d542bbdddbddeba60250cb482baf3ae2415 MISC:https://git.kernel.org/stable/c/955a923d2809803980ff574270f81510112be9cf URL:https://git.kernel.org/stable/c/955a923d2809803980ff574270f81510112be9cf MISC:https://git.kernel.org/stable/c/f3956791cf526540addd3295e4c1e0f0442486cc URL:https://git.kernel.org/stable/c/f3956791cf526540addd3295e4c1e0f0442486cc
Assigning CNA
kernel.org
Date Record Created
20240530	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 (20240530)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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