What is CVE-2026-46283?

CVE-2026-46283 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.10 onward and patched in 6.12.86, 6.18.27, 7.0.4 and others. CVE-2026-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46283?

CVE-2026-46283 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-2026-46283?

Yes, CVE-2026-46283 has been patched. Fixed versions include 6.12.86, 6.18.27, 7.0.4 and others. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46283 actively exploited?

CVE-2026-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46283

Medium

In the Linux kernel, the following vulnerability has been resolved: tpm: Use kfree_sensitive() to free auth session in tpm_dev_release() tpm_dev_release() uses plain kfree() to free chip->auth, which contains sensitive cryptographic material including HMAC session keys, nonces, and passphrase data (struct tpm2_auth). Every other code path that frees this structure uses kfree_sensitive() to zero the memory before releasing it: both tpm2_end_auth_session() and tpm_buf_check_hmac_response() do so. The tpm_dev_release() path is the only one that does not, leaving key material in freed slab memory until it is eventually overwritten. Use kfree_sensitive() for consistency with the rest of the driver and to ensure session keys are scrubbed during device teardown.

Package Linux Kernel

Published 2026-06-08

Last modified 2026-07-23

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 6.10 and later are affected. Fixed in 6.12.86, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 6.10

Fixed in

✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

4 total

Kernel Git
https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7

Patch
Kernel Git
https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352

Patch
Kernel Git
https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2

Patch
Kernel Git
https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a

Patch

Details

CVE ID CVE-2026-46283

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-08

Modified 2026-07-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46283?

CVE-2026-46283 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.10 onward and has been patched in 6.12.86, 6.18.27, 7.0.4 and others. CVE-2026-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46283?

CVE-2026-46283 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-2026-46283?

Yes. CVE-2026-46283 has been patched. Fixed versions include 6.12.86, 6.18.27, 7.0.4 and others. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46283 actively exploited?

No. CVE-2026-46283 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.