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NVD / CVE Program· CNA Linux

CVE-2023-54156: sfc: fix crash when reading stats while NIC is resetting

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 446f5567934331923d0aec4ce045e4ecb0174aae, 470152d76b3ed107d172ea46acc4bfa941f20b4b, 91f4ef204e731565afdc6c2a7fcf509a3fd6fd67.

Low priority for now. Upgrade to Linux Linux 446f5567934331923d0aec4ce045e4ecb0174aae, 470152d76b3ed107d172ea46acc4bfa941f20b4b, 91f4ef204e731565afdc6c2a7fcf509a3fd6fd67 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: sfc: fix crash when reading stats while NIC is resetting efx_net_stats() (.ndo_get_stats64) can be called during an ethtool selftest, during which time nic_data->mc_stats is NULL as the NIC has been fini'd. In this case do not attempt to fetch the latest stats from the hardware, else we will crash on a NULL dereference: BUG: kernel NULL pointer dereference, address: 0000000000000038 RIP efx_nic_update_stats abridged calltrace: efx_ef10_update_stats_pf efx_net_stats dev_get_stats dev_seq_printf_stats Skipping the read is safe, we will simply give out stale stats. To ensure that the free in efx_ef10_fini_nic() does not race against efx_ef10_update_stats_pf(), which could cause a TOCTTOU bug, take the efx->stats_lock in fini_nic (it is already held across update_stats).

Published
Dec 24, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Follow CVE-2023-54156

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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

    • 5.9affected
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before cb1aa7cc562cab6a87ea33574c8c65f2d2fd7aebaffected · git
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before 91f4ef204e731565afdc6c2a7fcf509a3fd6fd67affected · git
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before 446f5567934331923d0aec4ce045e4ecb0174aaeaffected · git
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before 470152d76b3ed107d172ea46acc4bfa941f20b4baffected · git
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before aba32b4c58112960c0c708703ca6b44dc8944082affected · git
    • d3142c193dca9a2f6878f4128ce1aaf221bb3f99 and later · before d1b355438b8325a486f087e506d412c4e852f37baffected · git
    • before 5.9not affected · semver
    • 5.10.188 and later · up to and including 5.10.*not affected · semver
    • 5.15.121 and later · up to and including 5.15.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.52-16.1.52-1
Debian:13linuxbefore 6.4.4-16.4.4-1

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-2023-54120Dec 24, 2025 · Bluetooth: Fix race condition in hidp_session_thread
    35Monitor
  • ← EarlierCVE-2023-54128Dec 24, 2025 · fs: drop peer group ids under namespace lock
    31Monitor
  • Later →CVE-2025-68735Dec 24, 2025 · drm/panthor: Prevent potential UAF in group creation
    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 Linux446f5567934331923d0aec4ce045e4ecb0174aaeVendor (CNA)
Linux Linux470152d76b3ed107d172ea46acc4bfa941f20b4bVendor (CNA)
Linux Linux91f4ef204e731565afdc6c2a7fcf509a3fd6fd67Vendor (CNA)
Linux Linuxaba32b4c58112960c0c708703ca6b44dc8944082Vendor (CNA)
Linux Linuxcb1aa7cc562cab6a87ea33574c8c65f2d2fd7aebVendor (CNA)
Linux Linuxd1b355438b8325a486f087e506d412c4e852f37bVendor (CNA)
debian:linux6.1.52-1 · Debian:12Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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.

References

Show all references (5 more)

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

All records