CVE-2026-98885
Received
Received - Intake
IMA xattr Change Failure in Linux Kernel
Vulnerability report for CVE-2026-98885, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-23
Last updated on: 2026-10-23
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
ima: return error early if file xattr cannot be changed
During early boot, the filesystem is read-only and any changes
to xattrs are not allowed. This fails in case of ext4 because
changing xattr starts an ext4 transaction which fails with the
following warning.
WARNING: fs/ext4/ext4_jbd2.c:75 at ext4_journal_check_start+0x63/0xa0 [ext4], CPU#1: systemd-sysroot/561
CPU: 1 UID: 0 PID: 561 Comm: systemd-sysroot Not tainted 6.19.12-1-default #1 PREEMPT(voluntary) openSUSE Tumbleweed c2dfc3c9d9f6f1233251c5d4410574fe82a348ee
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS unknown 02/02/2022
RIP: 0010:ext4_journal_check_start+0x63/0xa0 [ext4]
Call Trace:
__ext4_journal_start_sb+0x3e/0x180 [ext4 6d025f3bc52c89a957b89a89d211fadf5e9434e1]
ext4_xattr_set+0x104/0x150 [ext4 6d025f3bc52c89a957b89a89d211fadf5e9434e1]
__vfs_setxattr+0x9a/0xd0
__vfs_setxattr_noperm+0x76/0x1f0
ima_appraise_measurement+0x23e/0xe40
ima_d_path+0x5a/0xd0
process_measurement+0xb29/0xc40
? copy_from_kernel_nofault+0x21/0xe0
? fscrypt_file_open+0xc0/0xe0
? ext4_file_open+0x60/0x490 [ext4 6d025f3bc52c89a957b89a89d211fadf5e9434e1]
? bpf_prog_31efb7c56239148b_restrict_filesystems+0xab/0x126
? __bpf_prog_exit+0x23/0xd0
? __bpf_tramp_exit+0xd/0x50
? bpf_trampoline_6442530367+0x9f/0xea
ima_file_check+0x57/0x80
security_file_post_open+0x50/0xf0
path_openat+0x493/0x1650
do_filp_open+0xc7/0x170
Detect the state of the file early and return the error.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 0 |
| Linux | Linux | 0 |
| Linux | Linux | 0 |
| Linux | Linux | 0 |
| Linux | Linux | 0 |
| Linux | Linux | 0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
