CVE-2024-57943: exfat: fix the new buffer was not zeroed before writing
First published: Tue Jan 21 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: exfat: fix the new buffer was not zeroed before writing Before writing, if a buffer_head marked as new, its data must be zeroed, otherwise uninitialized data in the page cache will be written. So this commit uses folio_zero_new_buffers() to zero the new buffers before ->write_end().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel | ||
| Linux Kernel | >=6.12<6.12.10 | |
| Linux Kernel | =6.13-rc1 | |
| Linux Kernel | =6.13-rc2 | |
| Linux Kernel | =6.13-rc3 | |
| Linux Kernel | =6.13-rc4 | |
| Linux Kernel | =6.13-rc5 | |
| Linux Kernel | =6.13-rc6 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-57943?
The severity of CVE-2024-57943 has not been explicitly assigned, but it involves the potential exposure of uninitialized data.
How do I fix CVE-2024-57943?
To fix CVE-2024-57943, ensure that your Linux kernel is updated to the latest version that includes the commit addressing this vulnerability.
What does CVE-2024-57943 affect?
CVE-2024-57943 affects the Linux kernel, specifically related to the exfat filesystem handling.
What kind of vulnerability is CVE-2024-57943?
CVE-2024-57943 is a data handling vulnerability that allows uninitialized data to be written to disk.
Is CVE-2024-57943 exploitable?
While CVE-2024-57943 could lead to data leakage, the actual exploitability depends on specific conditions and the system's configuration.
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