What is CVE-2025-68208?

CVE-2025-68208 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.6.15 onward and patched in 6.6.117, 6.12.59, 6.17.9 and others. CVE-2025-68208 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68208?

CVE-2025-68208 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-68208?

Yes, CVE-2025-68208 has been patched. Fixed versions include 6.6.117, 6.12.59, 6.17.9 and others. If you are running Linux kernel 6.6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68208 actively exploited?

CVE-2025-68208 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68208

High

In the Linux kernel, the following vulnerability has been resolved: bpf: account for current allocated stack depth in widen_imprecise_scalars() The usage pattern for widen_imprecise_scalars() looks as follows: prev_st = find_prev_entry(env, ...); queued_st = push_stack(...); widen_imprecise_scalars(env, prev_st, queued_st); Where prev_st is an ancestor of the queued_st in the explored states tree. This ancestor is not guaranteed to have same allocated stack depth as queued_st. E.g. in the following case: def main(): for i in 1..2: foo(i) // same callsite, differnt param def foo(i): if i == 1: use 128 bytes of stack iterator based loop Here, for a second 'foo' call prev_st->allocated_stack is 128, while queued_st->allocated_stack is much smaller. widen_imprecise_scalars() needs to take this into account and avoid accessing bpf_verifier_state->frame[*]->stack out of bounds.

Package Linux Kernel

Published 2025-12-16

Last modified 2026-07-30

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.6.15, 6.7 and later are affected. Fixed in 6.6.117, 6.12.59, 6.17.9, 6.18 and their respective stable series.

Affected from

≥ 6.6.15 ≥ 6.7

Fixed in

✓ 6.6.117 6.6.x ✓ 6.12.59 6.12.x ✓ 6.17.9 6.17.x ✓ 6.18

References

4 total

Details

CVE ID CVE-2025-68208

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-12-16

Modified 2026-07-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-68208?

CVE-2025-68208 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.6.15 onward and has been patched in 6.6.117, 6.12.59, 6.17.9 and others. CVE-2025-68208 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-68208?

CVE-2025-68208 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-68208?

Yes. CVE-2025-68208 has been patched. Fixed versions include 6.6.117, 6.12.59, 6.17.9 and others. If you are running Linux kernel 6.6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68208 actively exploited?

No. CVE-2025-68208 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.