What is CVE-2026-23178?

CVE-2026-23178 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.18 onward and patched in 6.1.163, 6.6.124, 6.12.70 and others. CVE-2026-23178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23178?

CVE-2026-23178 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-23178?

Yes, CVE-2026-23178 has been patched. Fixed versions include 6.1.163, 6.6.124, 6.12.70 and others. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23178 actively exploited?

CVE-2026-23178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23178

High

In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() `i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data into `ihid->rawbuf`. The former can come from the userspace in the hidraw driver and is only bounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set `max_buffer_size` field of `struct hid_ll_driver` which we do not). The latter has size determined at runtime by the maximum size of different report types you could receive on any particular device and can be a much smaller value. Fix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`. The impact is low since access to hidraw devices requires root.

Package Linux Kernel

Published 2026-02-14

Last modified 2026-04-15

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.18 and later are affected. Fixed in 6.1.163, 6.6.124, 6.12.70, 6.18.10, 6.19 and their respective stable series.

Affected from

≥ 5.18

Fixed in

✓ 6.1.163 6.1.x ✓ 6.6.124 6.6.x ✓ 6.12.70 6.12.x ✓ 6.18.10 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23178 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/2124279f1f8c32c1646ce98e75a1a39b23b7db76
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29
Patch
Kernel patch commit
https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23178

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-02-14

Modified 2026-04-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23178?

CVE-2026-23178 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.18 onward and has been patched in 6.1.163, 6.6.124, 6.12.70 and others. CVE-2026-23178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23178?

CVE-2026-23178 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-23178?

Yes — CVE-2026-23178 has been patched. Fixed versions include 6.1.163, 6.6.124, 6.12.70 and others. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23178 actively exploited?

No — CVE-2026-23178 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.