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CVE-2022-48645· NVD / CVE Program· CNA Linux

net: enetc: deny offload of tc-based TSN features on VF interfaces

In the Linux kernel, the following vulnerability has been resolved: net: enetc: deny offload of tc-based TSN features on VF interfaces TSN features on the ENETC (taprio, cbs, gate, police) are configured through a mix of command BD ring messages and port registers: enetc_port_rd(), enetc_port_wr(). Port registers are a region of the ENETC memory map which are only accessible from the PCIe Physical Function. They are not accessible from the Virtual Functions. Moreover, attempting to access these registers crashes the kernel: $ echo 1 > /sys/bus/pci/devices/0000\:00\:00.0/sriov_numvfs pci 0000:00:01.0: [1957:ef00] type 00 class 0x020001 fsl_enetc_vf 0000:00:01.0: Adding to iommu group 15 fsl_enetc_vf 0000:00:01.0: enabling device (0000 -> 0002) fsl_enetc_vf 0000:00:01.0 eno0vf0: renamed from eth0 $ tc qdisc replace dev eno0vf0 root taprio num_tc 8 map 0 1 2 3 4 5 6 7 \ queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 base-time 0 \ sched-entry S 0x7f 900000 sched-entry S 0x80 100000 flags 0x2 Unable to handle kernel paging request at virtual address ffff800009551a08 Internal error: Oops: 96000007 [#1] PREEMPT SMP pc : enetc_setup_tc_taprio+0x170/0x47c lr : enetc_setup_tc_taprio+0x16c/0x47c Call trace: enetc_setup_tc_taprio+0x170/0x47c enetc_setup_tc+0x38/0x2dc taprio_change+0x43c/0x970 taprio_init+0x188/0x1e0 qdisc_create+0x114/0x470 tc_modify_qdisc+0x1fc/0x6c0 rtnetlink_rcv_msg+0x12c/0x390 Split enetc_setup_tc() into separate functions for the PF and for the VF drivers. Also remove enetc_qos.o from being included into enetc-vf.ko, since it serves absolutely no purpose there.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 28, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile
CWE
—
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Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.5 and later · before 5.15.71
  • linux linux kernel5.16 and later · before 5.19.12
  • linux linux kernel6.0

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

    • 5.5affected
    • 34c6adf1977b611fca3b824ad12a2a415e1e420e and later · before 510e703e4ed0e011db860bc21228aff48fc9eea7affected · git
    • 34c6adf1977b611fca3b824ad12a2a415e1e420e and later · before 23022b74b1a23bed044f6bc96cf92f6ca5f3e75faffected · git
    • 34c6adf1977b611fca3b824ad12a2a415e1e420e and later · before 5641c751fe2f92d3d9e8a8e03c1263ac8caa0b42affected · git
    • before 5.5not affected · semver
    • 5.15.71 and later · up to and including 5.15.*not affected · semver
    • 5.19.12 and later · up to and including 5.19.*not affected · semver
    • 6.0 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1
openSUSE:Leap 15.5dtb-aarch64before 5.14.21-150500.55.80.15.14.21-150500.55.80.1
openSUSE:Leap 15.5kernel-debugbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
openSUSE:Leap 15.5kernel-kvmsmallbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
openSUSE:Leap 15.5kernel-obs-qabefore 5.14.21-150500.55.80.15.14.21-150500.55.80.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_19before 1-150500.11.3.21-150500.11.3.2
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_19before 1-150500.11.3.21-150500.11.3.2
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5-RT_Update_19before 1-150500.11.3.21-150500.11.3.2
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5-RT_Update_19before 1-150500.11.3.21-150500.11.3.2
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.80.2.150500.6.35.65.14.21-150500.55.80.2.150500.6.35.6
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.80.2.150500.6.35.65.14.21-150500.55.80.2.150500.6.35.6
SUSE:Linux Enterprise Micro 5.5kernel-rtbefore 5.14.21-150500.13.67.35.14.21-150500.13.67.3
SUSE:Linux Enterprise Micro 5.5kernel-rtbefore 5.14.21-150500.13.67.35.14.21-150500.13.67.3
SUSE:Linux Enterprise Micro 5.5kernel-source-rtbefore 5.14.21-150500.13.67.35.14.21-150500.13.67.3
SUSE:Linux Enterprise Micro 5.5kernel-source-rtbefore 5.14.21-150500.13.67.35.14.21-150500.13.67.3
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-64kbbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-64kbbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-sourcebefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-sourcebefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-zfcpdumpbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Basesystem 15 SP5kernel-zfcpdumpbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2
SUSE:Linux Enterprise Module for Development Tools 15 SP5kernel-docsbefore 5.14.21-150500.55.80.25.14.21-150500.55.80.2

+15

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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 Linux23022b74b1a23bed044f6bc96cf92f6ca5f3e75fVendor (CNA)
Linux Linux510e703e4ed0e011db860bc21228aff48fc9eea7Vendor (CNA)
Linux Linux5641c751fe2f92d3d9e8a8e03c1263ac8caa0b42Vendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)
opensuse:kernel-azure5.14.21-150500.33.66.1 · openSUSE:Leap 15.5Package registry (OSV)
opensuse:kernel-rt5.14.21-150500.13.67.3 · openSUSE:Leap Micro 5.5Package registry (OSV)
opensuse:kernel-source-azure5.14.21-150500.33.66.1 · openSUSE:Leap 15.5Package registry (OSV)
opensuse:kernel-syms-azure5.14.21-150500.33.66.1 · openSUSE:Leap 15.5Package registry (OSV)
suse:kernel-azure5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5-RT_Update_191-150500.11.3.2 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-rt5.14.21-150500.13.67.3 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-rt_debug5.14.21-150500.13.67.3 · SUSE:Real Time Module 15 SP5Package registry (OSV)
suse:kernel-source-azure5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5Package registry (OSV)
suse:kernel-source-rt5.14.21-150500.13.67.3 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-syms-azure5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5Package registry (OSV)
suse:kernel-syms-rt5.14.21-150500.13.67.1 · SUSE:Real Time Module 15 SP5Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

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

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

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

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References

All records