What is CVE-2026-23376?

CVE-2026-23376 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.17.3 onward and patched in 6.18.17, 6.19.7 and 7.0. CVE-2026-23376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23376?

CVE-2026-23376 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-2026-23376?

Yes, CVE-2026-23376 has been patched. Fixed versions include 6.18.17, 6.19.7 and 7.0. If you are running Linux kernel 6.17.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23376 actively exploited?

CVE-2026-23376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23376

Medium

In the Linux kernel, the following vulnerability has been resolved: nvmet-fcloop: Check remoteport port_state before calling done callback In nvme_fc_handle_ls_rqst_work, the lsrsp->done callback is only set when remoteport->port_state is FC_OBJSTATE_ONLINE. Otherwise, the nvme_fc_xmt_ls_rsp's LLDD call to lport->ops->xmt_ls_rsp is expected to fail and the nvme-fc transport layer itself will directly call nvme_fc_xmt_ls_rsp_free instead of relying on LLDD's done callback to free the lsrsp resources. Update the fcloop_t2h_xmt_ls_rsp routine to check remoteport->port_state. If online, then lsrsp->done callback will free the lsrsp. Else, return -ENODEV to signal the nvme-fc transport to handle freeing lsrsp.

Package Linux Kernel

Published 2026-03-25

Last modified 2026-04-24

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 6.17.3, 6.18 and later are affected. Fixed in 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from

≥ 6.17.3 ≥ 6.18

Fixed in

✓ 6.18.17 6.18.x ✓ 6.19.7 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23376 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/31d3817bcd9e192b30abe3cf4b68f69d48864dd2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/dd677d0598387ea623820ab2bd0e029c377445a3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f30b95159a53e72529a9ca1667f11cd1970240a7
Patch

Details

CVE ID CVE-2026-23376

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-03-25

Modified 2026-04-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23376?

CVE-2026-23376 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.17.3 onward and has been patched in 6.18.17, 6.19.7 and 7.0. CVE-2026-23376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23376?

CVE-2026-23376 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-2026-23376?

Yes — CVE-2026-23376 has been patched. Fixed versions include 6.18.17, 6.19.7 and 7.0. If you are running Linux kernel 6.17.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23376 actively exploited?

No — CVE-2026-23376 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.