Unrated severityNVD Advisory· Published Oct 23, 2026
CVE-2026-98907
CVE-2026-98907
Description
In the Linux kernel, the following vulnerability has been resolved:
btrfs: protect sb_write_pointer() with invalidate lock
sb_write_pointer() reads the super block from the block device page cache using read_cache_page_gfp(). This has the same race with BLKBSZSET as the one fixed by commit 3f29d661e568 ("btrfs: sync read disk super and set block size").
Take the mapping invalidate lock around read_cache_page_gfp() to serialize the read against block size changes.
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Affected products
1Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/123b9a545f4d0348e81f558a032bf2a93ee5722fnvd
- git.kernel.org/stable/c/1a6c92aa7242a04e4349c0ea213dbf703a1c9891nvd
- git.kernel.org/stable/c/80cd97c5e90096d040a623851795eac92fbd0ff1nvd
- git.kernel.org/stable/c/a0dc28359a8a26f970ccd250b126a2e0bd4118a5nvd
- git.kernel.org/stable/c/a58cab4535f085adc0f93d7efd7952ef437371danvd
- git.kernel.org/stable/c/c9b38f2eab5a9bd74087390318d93ccdd8d2deffnvd
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