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CVE-2026-98885

UnknownEPSS 0.18%

Last modified

CVE-2026-98885 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < 86acb68ebb220b83def94e7f4c33e24e843970e0; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < 4d98295357bcacb70874e73117e298a9d7d9b830; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < c6988714c0549e06610635c7a71e88635da6db64; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < 8c77312728d07b60fc028f676e42d842df918bcd; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < dce1b66fcfb40c935f426f602c3a41a7b9f62ba4; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < 2f29f880e98bf0087215726c45a485afd15b42cf; >= 07f6a79415d7d502ee0c7d02ace6594a7be7429a, < 69fc6474236d9edda6983623e4282f2bdfd8e3d8
LinuxLinux3.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98885?
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.
How severe is CVE-2026-98885?
Severity scoring for CVE-2026-98885 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98885?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST