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CVE-2023-53861

ext4: correct grp validation in ext4_mb_good_group

EPSS 0.2%
In the Linux kernel, the following vulnerability has been resolved: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/245759d987b617d183061db6ab8886ebb5cc78e9https://git.kernel.org/stable/c/3e24082f16825279054a2b8a5e668d65070bbf07https://git.kernel.org/stable/c/772ca4bc1d0d21320ef2ecc0f9e4f90ea85a035dhttps://git.kernel.org/stable/c/83a9d5f5ec7e75640b1ba0bbd77a4888df798bb4https://git.kernel.org/stable/c/a9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93https://git.kernel.org/stable/c/e69d665987db0e37896adf78a7e718f9a0a75d3f