What is CVE-2026-72426?

CVE-2026-72426 is a High severity Linux kernel vulnerability with a CVSS score of 8.4 out of 10, affecting Linux kernel versions from 7.1 onward and patched in 7.1.5 and 7.2. CVE-2026-72426 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-72426?

CVE-2026-72426 has a CVSS score of 8.4 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-72426?

Yes, CVE-2026-72426 has been patched. Fixed versions include 7.1.5 and 7.2. If you are running Linux kernel 7.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-72426 actively exploited?

CVE-2026-72426 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-72426

High

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer spill metadata during half-slot cleanup __clean_func_state() cleans dead stack slots in 4-byte halves. When the high half of a STACK_SPILL slot is dead and the low half remains live, cleanup converts the live low half to STACK_MISC or STACK_ZERO and clears the saved spilled_ptr metadata. That conversion is safe only for scalar spills. For a pointer spill, this metadata clear lets a later 32-bit fill from the still-live half avoid the normal non-scalar register-fill check and be treated as an ordinary scalar stack read. Leave non-scalar spill slots intact in this half-live shape. This is conservative for pruning and preserves the existing check_stack_read_fixed_off() rejection path for partial fills from pointer spills.

Package Linux Kernel

Published 2026-08-15

Last modified 2026-08-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.4

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 7.1 and later are affected. Fixed in 7.1.5, 7.2 and their respective stable series.

Affected from

≥ 7.1

Fixed in

✓ 7.1.5 7.1.x ✓ 7.2

References

2 total

Details

CVE ID CVE-2026-72426

Severity High

CVSS score 8.4 / 10

CVSS version 3.1

Published 2026-08-15

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-72426?

CVE-2026-72426 is a High severity Linux kernel vulnerability with a CVSS score of 8.4 out of 10 . It affects Linux kernel versions from 7.1 onward and has been patched in 7.1.5 and 7.2. CVE-2026-72426 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-72426?

CVE-2026-72426 has a CVSS score of 8.4 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-72426?

Yes. CVE-2026-72426 has been patched. Fixed versions include 7.1.5 and 7.2. If you are running Linux kernel 7.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-72426 actively exploited?

No. CVE-2026-72426 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.