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NVD / CVE Program· CNA Linux

CVE-2025-68173: ftrace: Fix softlockup in ftrace_module_enable

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 4099b98203d6b33d990586542fa5beee408032a3, 40c8ee40e48a2c82c762539952ed8fc0571db5bf, 7e3c96010ade29bb340a5bdce8675f50c7f59001.

Low priority for now. Upgrade to Linux Linux 4099b98203d6b33d990586542fa5beee408032a3, 40c8ee40e48a2c82c762539952ed8fc0571db5bf, 7e3c96010ade29bb340a5bdce8675f50c7f59001 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix softlockup in ftrace_module_enable A soft lockup was observed when loading amdgpu module. If a module has a lot of tracable functions, multiple calls to kallsyms_lookup can spend too much time in RCU critical section and with disabled preemption, causing kernel panic. This is the same issue that was fixed in commit d0b24b4e91fc ("ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY kernels") and commit 42ea22e754ba ("ftrace: Add cond_resched() to ftrace_graph_set_hash()"). Fix it the same way by adding cond_resched() in ftrace_module_enable.

—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.5affected
    • b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c and later · before a1dd0abd741a8111260676da729825d6c1461a71affected · git
    • b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c and later · before e81e6d6d99b16dae11adbeda5c996317942a940caffected · git
    • b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c and later · before 40c8ee40e48a2c82c762539952ed8fc0571db5bfaffected · git
    • b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c and later · before 7e3c96010ade29bb340a5bdce8675f50c7f59001affected · git
    • b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c and later · before 4099b98203d6b33d990586542fa5beee408032a3affected · git
    • before 4.5not affected · semver
    • 6.1.159 and later · up to and including 6.1.*not affected · semver
    • 6.6.117 and later · up to and including 6.6.*not affected · semver
    • 6.12.58 and later · up to and including 6.12.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.8-16.17.8-1
openSUSE:Leap 16.0dtb-aarch64before 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-64kbbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-azurebefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-defaultbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-default-basebefore 6.12.0-160000.27.1.160000.2.86.12.0-160000.27.1.160000.2.8
openSUSE:Leap 16.0kernel-docsbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-kvmsmallbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-obs-buildbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-obs-qabefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-rtbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-sourcebefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-symsbefore 6.12.0-160000.27.16.12.0-160000.27.1
openSUSE:Leap 16.0kernel-zfcpdumpbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Enterprise Server 16.0kernel-azurebefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Enterprise Server 16.0kernel-docsbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Enterprise Server 16.0kernel-kvmsmallbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Enterprise Server 16.0kernel-obs-qabefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Enterprise Server 16.0kernel-zfcpdumpbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Micro 6.2kernel-64kbbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Micro 6.2kernel-defaultbefore 6.12.0-160000.27.16.12.0-160000.27.1
SUSE:Linux Micro 6.2kernel-default-basebefore 6.12.0-160000.27.1.160000.2.86.12.0-160000.27.1.160000.2.8

+4

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68171Dec 16, 2025 · x86/fpu: Ensure XFD state on signal delivery
    31Monitor
  • ← EarlierCVE-2025-68172Dec 16, 2025 · crypto: aspeed - fix double free caused by devm
    0Monitor
  • Later →CVE-2025-68174Dec 16, 2025 · amd/amdkfd: enhance kfd process check in switch partition
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4099b98203d6b33d990586542fa5beee408032a3Vendor (CNA)
Linux Linux40c8ee40e48a2c82c762539952ed8fc0571db5bfVendor (CNA)
Linux Linux7e3c96010ade29bb340a5bdce8675f50c7f59001Vendor (CNA)
Linux Linuxa1dd0abd741a8111260676da729825d6c1461a71Vendor (CNA)
Linux Linuxe81e6d6d99b16dae11adbeda5c996317942a940cVendor (CNA)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-64kb6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-azure6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default-base6.12.0-160000.27.1.160000.2.8 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-docs6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-kvmsmall6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-build6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-qa6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-rt6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-source6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-syms6.12.0-160000.27.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:kernel-64kb6.12.0-160000.27.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-azure6.12.0-160000.27.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-default6.12.0-160000.27.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-default-base6.12.0-160000.27.1.160000.2.8 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-docs6.12.0-160000.27.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-kvmsmall6.12.0-160000.27.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-obs-build6.12.0-160000.27.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-obs-qa6.12.0-160000.27.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-rt6.12.0-160000.27.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-source6.12.0-160000.27.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-syms6.12.0-160000.27.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-zfcpdump6.12.0-160000.27.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records