What is CVE-2026-23087?

CVE-2026-23087 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 3.18 onward and patched in 5.10.249, 5.15.199, 6.1.162 and others. CVE-2026-23087 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23087?

CVE-2026-23087 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-2026-23087?

Yes, CVE-2026-23087 has been patched. Fixed versions include 5.10.249, 5.15.199, 6.1.162 and others. If you are running Linux kernel 3.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23087 actively exploited?

CVE-2026-23087 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2026-23087

Medium

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsiback_remove() Memory allocated for struct vscsiblk_info in scsiback_probe() is not freed in scsiback_remove() leading to potential memory leaks on remove, as well as in the scsiback_probe() error paths. Fix that by freeing it in scsiback_remove().

Package Linux Kernel

Published 2026-02-04

Last modified 2026-03-17

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

Weakness type

CWE-401

CVE-2026-23087 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.18 and later are affected. Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, 6.18.8, 6.19 and their respective stable series.

Affected from

≥ 3.18

Fixed in

✓ 5.10.249 5.10.x ✓ 5.15.199 5.15.x ✓ 6.1.162 6.1.x ✓ 6.6.122 6.6.x ✓ 6.12.68 6.12.x ✓ 6.18.8 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23087 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/24c441f0e24da175d7912095663f526ac480dc4f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/32e52b56056daf0f0881fd9254706acf25b4be97
Patch
Kernel patch commit
https://git.kernel.org/stable/c/427b0fb30ddec3bad05dcd73b00718f98c7026d2
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2026-23087

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-02-04

Modified 2026-03-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23087?

CVE-2026-23087 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 3.18 onward and has been patched in 5.10.249, 5.15.199, 6.1.162 and others. CVE-2026-23087 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23087?

CVE-2026-23087 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-2026-23087?

Yes — CVE-2026-23087 has been patched. Fixed versions include 5.10.249, 5.15.199, 6.1.162 and others. If you are running Linux kernel 3.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23087 actively exploited?

No — CVE-2026-23087 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →