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NVD / CVE Program· CNA Linux

CVE-2022-48757: net: fix information leakage in /proc/net/ptype

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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 47934e06b65637c88a762d9c98329ae6e3238888, 839ec7039513a4f84bfbaff953a9393471176bee, 8f88c78d24f6f346919007cd459fd7e51a8c7779.

Low priority for now. Upgrade to Linux Linux 47934e06b65637c88a762d9c98329ae6e3238888, 839ec7039513a4f84bfbaff953a9393471176bee, 8f88c78d24f6f346919007cd459fd7e51a8c7779 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 information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Jun 20, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 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.

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.

Follow CVE-2022-48757

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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 kernel2.6.26 and later · before 4.4.302
  • linux linux kernel4.5 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 5.4.176
  • linux linux kernel5.5 and later · before 5.10.96
  • linux linux kernel5.11 and later · before 5.15.19
  • linux linux kernel5.16 and later · before 5.16.5
  • linux linux kernel5.17

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

    • 2.6.26affected
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before 8f88c78d24f6f346919007cd459fd7e51a8c7779affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before be1ca30331c7923c6f376610c1bd6059be9b1908affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before c38023032a598ec6263e008d62c7f02def72d5c7affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before b67ad6170c0ea87391bb253f35d1f78857736e54affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before e372ecd455b6ebc7720f52bf4b5f5d44d02f2092affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before db044d97460ea792110eb8b971e82569ded536c6affected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before e43669c77cb3a742b7d84ecdc7c68c4167a7709baffected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before 839ec7039513a4f84bfbaff953a9393471176beeaffected · git
    • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 and later · before 47934e06b65637c88a762d9c98329ae6e3238888affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.16.7-15.16.7-1
Red Hat:enterprise_linux:8::baseosbpftoolbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseosbpftool-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernelbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-abi-stablelistsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-corebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debugbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-corebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-develbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-modulesbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-modules-extrabefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-aarch64before 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-ppc64lebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-s390xbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-develbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-docbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-modulesbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-modules-extrabefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-toolsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-tools-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-tools-libsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10

+63

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-2022-48755Jun 20, 2024 · powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06
    22Monitor
  • ← EarlierCVE-2022-48756Jun 20, 2024 · drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable
    22Monitor
  • Later →CVE-2022-48758Jun 20, 2024 · scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
    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 / packageFixed versionSource
Linux Linux47934e06b65637c88a762d9c98329ae6e3238888Vendor (CNA)
Linux Linux839ec7039513a4f84bfbaff953a9393471176beeVendor (CNA)
Linux Linux8f88c78d24f6f346919007cd459fd7e51a8c7779Vendor (CNA)
Linux Linuxb67ad6170c0ea87391bb253f35d1f78857736e54Vendor (CNA)
Linux Linuxbe1ca30331c7923c6f376610c1bd6059be9b1908Vendor (CNA)
Linux Linuxc38023032a598ec6263e008d62c7f02def72d5c7Vendor (CNA)
Linux Linuxdb044d97460ea792110eb8b971e82569ded536c6Vendor (CNA)
Linux Linuxe372ecd455b6ebc7720f52bf4b5f5d44d02f2092Vendor (CNA)
Linux Linuxe43669c77cb3a742b7d84ecdc7c68c4167a7709bVendor (CNA)
debian:linux5.16.7-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
rocky linux:kernel0:4.18.0-553.16.1.el8_10 · Rocky Linux:8Package registry (OSV)
rocky linux:kernel-rt0:4.18.0-553.16.1.rt7.357.el8_10 · Rocky Linux:8Package 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.

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.

  • CVE-2025-22069300 days apartriscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler
    31Monitor
  • CVE-2024-3603221 days apartBluetooth: qca: fix info leak when fetching fw build id
    28Monitor
  • CVE-2024-3603321 days apartBluetooth: qca: fix info leak when fetching board id
    28Monitor
  • CVE-2024-3949922 days apartvmci: prevent speculation leaks by sanitizing event in event_deliver()
    28Monitor
  • CVE-2024-4388161 days apartwifi: ath12k: change DMA direction while mapping reinjected packets
    28Monitor
  • CVE-2024-57838205 days aparts390/entry: Mark IRQ entries to fix stack depot warnings
    28Monitor

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
none
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
None
Availability impact
High

Weakness class (CWE)

CWE-668 · Exposure of Resource to Wrong Sphere

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 (8 more)

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

All records