CVE-2026-89601

HIGH
MEDIUM Priority: 0.06 BB Relevance: 68/100
Published: 2026-09-11 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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().

Affected Software (7)

VendorProductVersion
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 55e66d84b5272c425b324a2b247cdacacf1e10b9
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b879565effd88fc119c2efea3f3868a9997ed9ba
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e54de654423bee98d1ba50379b09daf97c7854a6
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5481766125041e71662f2e32ee0e91ad5f4d07f4
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5efb3350230fef831167740e69e6db2861101186
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a
Linux Linux 2.6.12

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.65%
Raw Score 0.006480
Percentile 51.1%
Date 2026-10-31

EPSS Trend

2026-10-31
0.00648
2026-10-30
0.00601
2026-10-29
0.00601

Intelligence Sources

mitre ref →
nvd ref →