Linux Linux Kernel Vulnerability Rated 8.8 CVSS

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-89601

Key Details

CVE	CVE-2026-89601
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-15
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Exploitation prediction (EPSS)	0.51% probability of exploitation in the next 30 days (42% percentile) -- FIRST.org's EPSS model.

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

ext2: Fix lost inode updates for IS_SYNC inodes

ext2_setsize() and ext2_xattr_set2() had a construct like:

if (IS_SYNC(inode)) {

sync_inode_metadata(inode, 1);

} else {

mark_inode_dirty(inode);

}

which leads to lost inode updates for IS_SYNC inodes because

sync_inode_metadata() does anything only if the inode is already dirty

and hence inode updates may be simply lost. Fix the problem by

unconditionally marking the inode dirty and *then* call

sync_inode_metadata(). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89601
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89601

Source

Reference

NVD

CVE