What is CVE-2026-98062?

CVE-2026-98062 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.12.6 onward and patched in 6.18.53, 7.2.7 and 7.3-rc2. CVE-2026-98062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98062?

CVE-2026-98062 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-2026-98062?

Yes, CVE-2026-98062 has been patched. Fixed versions include 6.18.53, 7.2.7 and 7.3-rc2. If you are running Linux kernel 6.12.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98062 actively exploited?

CVE-2026-98062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2026-98062

Medium

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark signal tracepoint siginfo arguments as scalar The signal_generate and signal_deliver tracepoints declare their info argument as a struct kernel_siginfo pointer. btf_ctx_access() therefore treats it as a trusted pointer for tp_btf programs. Signal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special values for this argument. Those values are zero and one respectively, and are not pointers. A tp_btf program can currently dereference either value and fault the kernel. In particular, signal_generate can run from timer interrupt context, turning the fault into a kernel panic. Record both tracepoints in raw_tp_null_args[] and mark argument one as a non-pointer. This preserves scalar access to the cookie while rejecting direct and helper-mediated pointer use. Merely marking it nullable would not suffice because SEND_SIG_PRIV is nonzero.

Package Linux Kernel

Published 2026-09-25

Last modified 2026-10-02

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

Weakness type

CWE-476

CVE-2026-98062 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.12.6, 6.13 and later are affected. Fixed in 6.18.53, 7.2.7, 7.3-rc2 and their respective stable series.

Affected from

≥ 6.12.6 ≥ 6.13

Fixed in

✓ 6.18.53 6.18.x ✓ 7.2.7 7.2.x ✓ 7.3-rc2

References

3 total

Kernel Git
https://git.kernel.org/stable/c/0e78cb242a57e481061fcb542fed4d51afba25c4

Patch
Kernel Git
https://git.kernel.org/stable/c/77515ab12e4983e6416f8c35039a3f0c0822ac70

Patch
Kernel Git
https://git.kernel.org/stable/c/d2eaea3599bcce659ce91862254dc91bcbdb6351

Patch

Details

CVE ID CVE-2026-98062

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-09-25

Modified 2026-10-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-98062?

CVE-2026-98062 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.12.6 onward and has been patched in 6.18.53, 7.2.7 and 7.3-rc2. CVE-2026-98062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-98062?

CVE-2026-98062 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-2026-98062?

Yes. CVE-2026-98062 has been patched. Fixed versions include 6.18.53, 7.2.7 and 7.3-rc2. If you are running Linux kernel 6.12.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98062 actively exploited?

No. CVE-2026-98062 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.