CVEvulnerability

CVE-2026-31514

5.5 MEDIUM Published 2026-04-22 Modified 2026-10-23 Official page ↗
Status
Analyzed
Published
2026-04-22
Last modified
2026-10-23
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Affected configurations

• linux linux kernel (>= 6.12.75 < 6.12.80) • linux linux kernel (>= 6.18.14 < 6.18.21) • linux linux kernel (>= 6.19.4 < 6.19.11)

References