CVE-2026-98267
kernel: 9p: Fix v9fs_issue_write() to update i_size and remote_i_size
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 6, 2026
Updated · October 11, 2026
Description
A flaw was found in the Linux kernel's 9P file system implementation. When write operations extend a file, the kernel fails to update the recorded file size to reflect the new length. A local user performing write operations on a 9P mount can trigger this issue, leading to inconsistent file state tracking. This flaw can result in unexpected application errors or potential data corruption.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-252 · Unchecked Return Value