What is CVE-2026-46046?

CVE-2026-46046 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.10.237 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46046?

CVE-2026-46046 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-46046?

Yes, CVE-2026-46046 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.10.237 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46046 actively exploited?

CVE-2026-46046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46046

Medium

In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-16

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 5.4.293, 6.13.12, 6.14.3, 6.15 and later are affected. Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 5.10.237 ≥ 5.15.181 ≥ 6.1.135 ≥ 6.6.88 ≥ 6.12.24 ≥ 5.4.293 ≥ 6.13.12 ≥ 6.14.3 ≥ 6.15

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920

Patch
Kernel Git
https://git.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29

Patch
Kernel Git
https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8

Patch
Kernel Git
https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf

Patch
Kernel Git
https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46046

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46046?

CVE-2026-46046 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.10.237 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46046?

CVE-2026-46046 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-46046?

Yes. CVE-2026-46046 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.10.237 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46046 actively exploited?

No. CVE-2026-46046 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.