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NVD / CVE Program· CNA Linux

CVE-2025-22103: net: fix NULL pointer dereference in l3mdev_l3_rcv

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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).
  • 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 0032c99e83b9ce6d5995d65900aa4b6ffb501cce, 1da52878f7fb74ace304f74325bb89e3e5546b55, 52b44d8c653459c658b733d13658afdde45f6836; azl3 kernel 6.6.112.1-2 on Azure Linux 3.0 6.6.117.1-1; cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0 Release Notes.

Low priority for now. Upgrade to Linux Linux 0032c99e83b9ce6d5995d65900aa4b6ffb501cce, 1da52878f7fb74ace304f74325bb89e3e5546b55, 52b44d8c653459c658b733d13658afdde45f6836; azl3 kernel 6.6.112.1-2 on Azure Linux 3.0 6.6.117.1-1; cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0 Release Notes 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: net: fix NULL pointer dereference in l3mdev_l3_rcv When delete l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s This may cause a null pointer dereference: Call trace: ip_rcv_finish+0x48/0xd0 ip_rcv+0x5c/0x100 __netif_receive_skb_one_core+0x64/0xb0 __netif_receive_skb+0x20/0x80 process_backlog+0xb4/0x204 napi_poll+0xe8/0x294 net_rx_action+0xd8/0x22c __do_softirq+0x12c/0x354 This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process like this: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev->priv_flags: | master = skb->dev; | | | ipvlan_l3s_unregister() | set dev->priv_flags | dev->l3mdev_ops = NULL; | visit master->l3mdev_ops | To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 16, 2025
Updated
Sep 14, 2026
EPSS
0.2% · 10th percentile

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%

Get told when this record changes

  • 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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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.

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 kernel5.1 and later · before 6.12.46
  • linux linux kernel6.13 and later · before 6.14.2

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

    • 5.1affected
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before 1da52878f7fb74ace304f74325bb89e3e5546b55affected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before d97d6b1bd2b7f2a188d261d44c4519a13b8c406aaffected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before 8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862affected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before 52b44d8c653459c658b733d13658afdde45f6836affected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before 59599bce44af3df7a215ebc81cb166426e1c9204affected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before f9dff65140efc289f01bcf39c3ca66a8806b6132affected · git
    • c675e06a98a474f7ad0af32ce467613da818da52 and later · before 0032c99e83b9ce6d5995d65900aa4b6ffb501cceaffected · git
    • before 5.1not affected · semver
    • 5.10.270 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:13linuxbefore 6.12.48-16.12.48-1
Debian:14linuxbefore 6.16.3-16.16.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-22101Apr 16, 2025 · net: libwx: fix Tx L4 checksum
    22Monitor
  • ← EarlierCVE-2025-22102Apr 16, 2025 · Bluetooth: btnxpuart: Fix kernel panic during FW release
    22Monitor
  • Later →CVE-2025-22104Apr 16, 2025 · ibmvnic: Use kernel helpers for hex dumps
    28Monitor

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 Linux0032c99e83b9ce6d5995d65900aa4b6ffb501cceVendor (CNA)
Linux Linux1da52878f7fb74ace304f74325bb89e3e5546b55Vendor (CNA)
Linux Linux52b44d8c653459c658b733d13658afdde45f6836Vendor (CNA)
Linux Linux59599bce44af3df7a215ebc81cb166426e1c9204Vendor (CNA)
Linux Linux8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862Vendor (CNA)
Linux Linuxd97d6b1bd2b7f2a188d261d44c4519a13b8c406aVendor (CNA)
Linux Linuxf9dff65140efc289f01bcf39c3ca66a8806b6132Vendor (CNA)
azl3 kernel 6.6.112.1-2 on Azure Linux 3.06.6.117.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.48-1 · Debian:13Package 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

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)

CWE-476 · NULL Pointer Dereference

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (6 more)

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

All records