In the Linux kernel, the following vulnerability has been resolved: erofs: set fileio bio failed in short read case For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate. vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate This patch addresses this by setting short read bio with an error directly.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c Patch
- https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085 Patch
- https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323 Patch
- https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linuxNVD modified 2026-10-23 09:17
Affected (CPE criteria) 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References 4
- https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c Patch
- https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085 Patch
- https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323 Patch
- https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c Patch