What is CVE-2026-68119?

CVE-2026-68119 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, affecting Linux kernel versions from 6.7 onward and patched in 6.12.101, 6.18.42, 7.1.6 and others. CVE-2026-68119 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-68119?

CVE-2026-68119 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Is there a patch available for CVE-2026-68119?

Yes, CVE-2026-68119 has been patched. Fixed versions include 6.12.101, 6.18.42, 7.1.6 and others. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-68119 actively exploited?

CVE-2026-68119 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-68119

High

In the Linux kernel, the following vulnerability has been resolved: tcp: initialize standalone TCP-AO response padding tcp_v4_send_ack() and tcp_v6_send_response() construct standalone TCP responses with TCP-AO options. The option length carries the actual MAC length, but the TCP header length includes the option rounded up to a four-byte boundary. tcp_ao_hash_hdr() writes the MAC only. Thus, when the MAC length is not four-byte aligned, the one to three bytes after the MAC are left uninitialized and may be transmitted. For the normal TCP-AO hashing mode, those bytes also have to be initialized before computing the MAC. Initialize only the alignment padding in the TCP-AO branches, before hashing the header. Use TCPOPT_NOP, as in the normal TCP-AO output path. This avoids adding work to non-AO TCP responses while preserving a valid authenticated header.

Package Linux Kernel

Published 2026-08-10

Last modified 2026-08-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Vector string

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

Affected versions

Linux kernel versions 6.7 and later are affected. Fixed in 6.12.101, 6.18.42, 7.1.6, 7.2 and their respective stable series.

Affected from

≥ 6.7

Fixed in

✓ 6.12.101 6.12.x ✓ 6.18.42 6.18.x ✓ 7.1.6 7.1.x ✓ 7.2

References

4 total

Details

CVE ID CVE-2026-68119

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2026-08-10

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-68119?

CVE-2026-68119 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 . It affects Linux kernel versions from 6.7 onward and has been patched in 6.12.101, 6.18.42, 7.1.6 and others. CVE-2026-68119 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-68119?

CVE-2026-68119 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Is there a patch available for CVE-2026-68119?

Yes. CVE-2026-68119 has been patched. Fixed versions include 6.12.101, 6.18.42, 7.1.6 and others. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-68119 actively exploited?

No. CVE-2026-68119 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.