cve-2021-47519
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-12-19 07:44
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_read_fifo: fix memory leak in error branch In m_can_read_fifo(), if the second call to m_can_fifo_read() fails, the function jump to the out_fail label and returns without calling m_can_receive_skb(). This means that the skb previously allocated by alloc_can_skb() is not freed. In other terms, this is a memory leak. This patch adds a goto label to destroy the skb if an error occurs. Issue was found with GCC -fanalyzer, please follow the link below for details.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31cb32a590d62b18f69a9a6d433f4e69c74fdd56Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75a422165477dd12d2d20aa7c9ee7c9a281c9908Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/31cb32a590d62b18f69a9a6d433f4e69c74fdd56Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/75a422165477dd12d2d20aa7c9ee7c9a281c9908Patch
Impacted products
Vendor Product Version
Linux Linux Version: e39381770ec9ca3c51d8b9bd9cc6e01d78ea974a
Version: e39381770ec9ca3c51d8b9bd9cc6e01d78ea974a
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   Linux Linux Version: 5.15
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