What is CVE-2026-46000?

CVE-2026-46000 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.22 onward and patched in 6.6.140, 6.12.88, 6.18.27 and others. CVE-2026-46000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46000?

CVE-2026-46000 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-2026-46000?

Yes, CVE-2026-46000 has been patched. Fixed versions include 6.6.140, 6.12.88, 6.18.27 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46000 actively exploited?

CVE-2026-46000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46000

Medium

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets The security operations that verify the RESPONSE packets decrypt bits of it in place - however, the sk_buff may be shared with a packet sniffer, which would lead to the sniffer seeing an apparently corrupt packet (actually decrypted). Fix this by handing a copy of the packet off to the specific security handler if the packet was cloned.

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 2.6.22 and later are affected. Fixed in 6.6.140, 6.12.88, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 2.6.22

Fixed in

✓ 6.6.140 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/24481a7f573305706054c59e275371f8d0fe919f

Patch
Kernel Git
https://git.kernel.org/stable/c/98a2046d155f73f6cf5d2c493c5e09b4963e2e12

Patch
Kernel Git
https://git.kernel.org/stable/c/c0428a22daf69714dc042b67ea759956b74c74e5

Patch
Kernel Git
https://git.kernel.org/stable/c/ca71ac2de389b01eecdc48bfafbdf073ec232044

Patch
Kernel Git
https://git.kernel.org/stable/c/d9b93a0f57ca5f6831bfaa34014b6cd705564a00

Patch

Details

CVE ID CVE-2026-46000

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-2026-46000?

CVE-2026-46000 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.22 onward and has been patched in 6.6.140, 6.12.88, 6.18.27 and others. CVE-2026-46000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46000?

CVE-2026-46000 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-2026-46000?

Yes. CVE-2026-46000 has been patched. Fixed versions include 6.6.140, 6.12.88, 6.18.27 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46000 actively exploited?

No. CVE-2026-46000 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.