NVD / CVE Program· CNA Linux

CVE-2022-48742: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()

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: 0.23% (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 2cf180360d66bd657e606c1217e0e668e6faa303, 36a9a0aee881940476b254e0352581401b23f210, 3bbe2019dd12b8d13671ee6cda055d49637b4c39.

Low priority for now. Upgrade to Linux Linux 2cf180360d66bd657e606c1217e0e668e6faa303, 36a9a0aee881940476b254e0352581401b23f210, 3bbe2019dd12b8d13671ee6cda055d49637b4c39 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: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink() While looking at one unrelated syzbot bug, I found the replay logic in __rtnl_newlink() to potentially trigger use-after-free. It is better to clear master_dev and m_ops inside the loop, in case we have to replay it.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

Published: Jun 20, 2024
Updated: Aug 5, 2026
EPSS: 0.2% · 14th percentile
CWE: CWE-416

Report tools

JSON

Action score

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: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.8
CNA · Linux: 7.8; agree

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

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

If any of these changes, we'll tell you in the daily email digest.

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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.

ProductVersion

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernel3.14 and later · before 4.9.300
linux linux kernel4.10 and later · before 4.14.265
linux linux kernel4.15 and later · before 4.19.228
linux linux kernel4.20 and later · before 5.4.177
linux linux kernel5.5 and later · before 5.10.97
linux linux kernel5.11 and later · before 5.15.20
linux linux kernel5.16 and later · before 5.16.6

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
- 3.14affected
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before 2cf180360d66bd657e606c1217e0e668e6faa303affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before 7d9211678c0f0624f74cdff36117ab8316697bb8affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before a01e60a1ec6bef9be471fb7182a33c6d6f124e93affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before bd43771ee9759dd9dfae946bff190e2c5a120de5affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before 3bbe2019dd12b8d13671ee6cda055d49637b4c39affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before def5e7070079b2a214b3b1a2fbec623e6fbfe34aaffected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before 36a9a0aee881940476b254e0352581401b23f210affected · git
- ba7d49b1f0f8e5f24294a880ed576964059af5ef and later · before c6f6f2444bdbe0079e41914a35081530d0409963affected · git
- before 3.14not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 5.16.7-1	5.16.7-1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-64kb	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-docs	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-obs-build	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-source	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-syms	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise Live Patching 12 SP5	kernel-default	before 4.12.14-122.244.1	4.12.14-122.244.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_64	before 1-8.5.1	1-8.5.1
SUSE:Linux Enterprise Live Patching 15 SP5	kernel-livepatch-SLE15-SP5_Update_22	before 1-150500.11.3.1	1-150500.11.3.1
SUSE:Linux Enterprise Micro 5.5	kernel-default	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1
SUSE:Linux Enterprise Micro 5.5	kernel-default-base	before 5.14.21-150500.55.91.1.150500.6.41.1	5.14.21-150500.55.91.1.150500.6.41.1
SUSE:Linux Enterprise Micro 5.5	kernel-rt	before 5.14.21-150500.13.82.1	5.14.21-150500.13.82.1
SUSE:Linux Enterprise Micro 5.5	kernel-source-rt	before 5.14.21-150500.13.82.1	5.14.21-150500.13.82.1
SUSE:Linux Enterprise Server 12 SP5-LTSS	kernel-source	before 4.12.14-122.244.1	4.12.14-122.244.1
SUSE:Linux Enterprise Server 12 SP5-LTSS	kernel-syms	before 4.12.14-122.244.1	4.12.14-122.244.1
SUSE:Linux Enterprise Server 15 SP5-LTSS	kernel-zfcpdump	before 5.14.21-150500.55.91.1	5.14.21-150500.55.91.1

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-2022-48740Jun 20, 2024 · selinux: fix double free of cond_list on error paths
31Monitor
← EarlierCVE-2022-48741Jun 20, 2024 · ovl: fix NULL pointer dereference in copy up warning
22Monitor
Later →CVE-2022-48743Jun 20, 2024 · net: amd-xgbe: Fix skb data length underflow
22Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	2cf180360d66bd657e606c1217e0e668e6faa303	Vendor (CNA)
Linux Linux	36a9a0aee881940476b254e0352581401b23f210	Vendor (CNA)
Linux Linux	3bbe2019dd12b8d13671ee6cda055d49637b4c39	Vendor (CNA)
Linux Linux	7d9211678c0f0624f74cdff36117ab8316697bb8	Vendor (CNA)
Linux Linux	a01e60a1ec6bef9be471fb7182a33c6d6f124e93	Vendor (CNA)
Linux Linux	bd43771ee9759dd9dfae946bff190e2c5a120de5	Vendor (CNA)
Linux Linux	c6f6f2444bdbe0079e41914a35081530d0409963	Vendor (CNA)
Linux Linux	def5e7070079b2a214b3b1a2fbec623e6fbfe34a	Vendor (CNA)
debian:linux	5.16.7-1 · Debian:12	Package registry (OSV)
suse:kernel-64kb	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-default	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-default-base	5.14.21-150500.55.91.1.150500.6.41.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-docs	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_22	1-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5	Package registry (OSV)
suse:kernel-obs-build	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-rt	5.14.21-150500.13.82.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-source	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-source-rt	5.14.21-150500.13.82.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-syms	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-zfcpdump	5.14.21-150500.55.91.1 · SUSE:Linux Enterprise Server 15 SP5-LTSS	Package registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_64	1-8.5.1 · SUSE:Linux Enterprise Live Patching 12 SP5	Package 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: 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)

CWE-416 · Use After Free

CVSS vector

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

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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

References

git.kernel.org/stable/c/2cf180360d66bd657e606c1217e0e668e6faa303

Show all references (7 more)

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

All records