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CVE-2022-48786· NVD / CVE Program· CNA Linux

vsock: remove vsock from connected table when connect is interrupted by a signal

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: 0.25% (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 0bb88f3f7e8d506f3efe46d694964117e20efbfc, 2910bcb9f67551a45397735e47b6d456eb8cd549, 5f326fe2aef411a6575628f92bd861463ea91df7.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 0bb88f3f7e8d506f3efe46d694964117e20efbfc, 2910bcb9f67551a45397735e47b6d456eb8cd549, 5f326fe2aef411a6575628f92bd861463ea91df7 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

In the Linux kernel, the following vulnerability has been resolved: vsock: remove vsock from connected table when connect is interrupted by a signal vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c977e ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 16, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 15th percentile
CWE
—

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 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

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-2022-48786

When you'll hear from us

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  • 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 kernel3.9 and later · before 4.9.303
  • linux linux kernel4.10 and later · before 4.14.268
  • linux linux kernel4.15 and later · before 4.19.231
  • linux linux kernel4.20 and later · before 5.4.181
  • linux linux kernel5.5 and later · before 5.10.102
  • linux linux kernel5.11 and later · before 5.15.25
  • linux linux kernel5.16 and later · before 5.16.11
  • 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

    • 3.9affected
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before 0bb88f3f7e8d506f3efe46d694964117e20efbfcaffected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before e3b3939fd137aab6d00d54bee0ee9244b286a608affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before 2910bcb9f67551a45397735e47b6d456eb8cd549affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before 5f326fe2aef411a6575628f92bd861463ea91df7affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before 87cd1bbd6677411e17369cd4b7389ab1e1fdba44affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before 787468ee7a435777521d33399d012fd591ae2f94affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before addd62a8cb6fa90aa322365c62487da61f6baab8affected · git
    • d021c344051af91f42c5ba9fdedc176740cbd238 and later · before b9208492fcaecff8f43915529ae34b3bcb03877caffected · git
    • before 3.9not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.16.11-15.16.11-1
Red Hat:rhel_aus:8.6::baseosbpftoolbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseosbpftool-debuginfobefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernelbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-abi-stablelistsbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-corebefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debugbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debug-corebefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debug-debuginfobefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debug-develbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debug-modulesbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debug-modules-extrabefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debuginfobefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-develbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-docbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-modulesbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-modules-extrabefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-toolsbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-tools-debuginfobefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseoskernel-tools-libsbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseosperfbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseosperf-debuginfobefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6
Red Hat:rhel_aus:8.6::baseospython3-perfbefore 0:4.18.0-372.131.1.el8_60:4.18.0-372.131.1.el8_6

+74

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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 Linux0bb88f3f7e8d506f3efe46d694964117e20efbfcVendor (CNA)
Linux Linux2910bcb9f67551a45397735e47b6d456eb8cd549Vendor (CNA)
Linux Linux5f326fe2aef411a6575628f92bd861463ea91df7Vendor (CNA)
Linux Linux787468ee7a435777521d33399d012fd591ae2f94Vendor (CNA)
Linux Linux87cd1bbd6677411e17369cd4b7389ab1e1fdba44Vendor (CNA)
Linux Linuxaddd62a8cb6fa90aa322365c62487da61f6baab8Vendor (CNA)
Linux Linuxb9208492fcaecff8f43915529ae34b3bcb03877cVendor (CNA)
Linux Linuxe3b3939fd137aab6d00d54bee0ee9244b286a608Vendor (CNA)
debian:linux5.16.11-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-372.131.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
suse:kernel-azure4.12.14-16.197.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:kernel-default4.12.14-122.228.1 · SUSE:Linux Enterprise High Availability Extension 12 SP5Package registry (OSV)
suse:kernel-docs4.12.14-122.228.2 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)
suse:kernel-obs-build4.12.14-122.228.2 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)
suse:kernel-rt4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5Package registry (OSV)
suse:kernel-rt_debug4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.228.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:kernel-source-azure4.12.14-16.197.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:kernel-source-rt4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5Package registry (OSV)

+3

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.

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records