CVE-2021-47146
CVSS 3.1 Score 5.5 of 10 (medium)
Details
Published Mar 25, 2024
Updated: Dec 20, 2024
Summary
CVE-2021-47146 is a vulnerability affecting the Linux kernel. In the function mld_newpack(), the allocation of high order pages is not permitted, only order-0 allocation is allowed. When the headroom size is too large, a kernel panic can occur in skb_put(). This issue can be reproduced using the provided test commands, and the kernel crash is indicated by a specific error message in the kernel log. To resolve this issue, allowing high order page allocation may be an option.
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