BlackTreeIndependent security intelligence

Full vulnerability report · 2024

CVE-2022-48751High confidence

net/smc: Transitional solution for clcsock race issue

Linux · Linux

7.8HighCVSS 3.1

Recommended action

Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 4 Sept 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current

CVE-2022-48751 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: net/smc: Transitional solution for clcsock race issue

156 known affected

The vendor explicitly identifies these products as affected by this CVE.

bpftool as a component of Red Hat Enterprise Linux 8
kernel as a component of Red Hat Enterprise Linux 8
kernel-abi-stablelists as a component of Red Hat Enterprise Linux 8
kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8
kernel-core as a component of Red Hat Enterprise Linux 8
kernel-cross-headers as a component of Red Hat Enterprise Linux 8
kernel-debug as a component of Red Hat Enterprise Linux 8
kernel-debug-core as a component of Red Hat Enterprise Linux 8
kernel-debug-devel as a component of Red Hat Enterprise Linux 8
kernel-debug-modules as a component of Red Hat Enterprise Linux 8
kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 8
kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 8

Summary: A flaw was found in the Linux kernel. A potential crash was observed in smc_setsockopt().
Remediation: Fix deferred

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current

ENISA EUVD identifier

EUVD-2022-53630

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state: Present in the current official mapping
Known exploitation: Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score: Not supplied in the stored EUVD record
Advisory evidence: No linked advisory details stored yet

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

In the Linux kernel, the following vulnerability has been resolved: net/smc: Transitional solution for clcsock race issue We encountered a crash in smc_setsockopt() and it is caused by accessing smc->clcsock after clcsock was released. BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 50309 Comm: nginx Kdump: loaded Tainted: G E 5.16.0-rc4+ #53 RIP: 0010:smc_setsockopt+0x59/0x280 [smc] Call Trace: <TASK> __sys_setsockopt+0xfc/0x190 __x64_sys_setsockopt+0x20/0x30 do_syscall_64+0x34/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f16ba83918e </TASK> This patch tries to fix it by holding clcsock_release_lock and checking whether clcsock has already been released before access. In case that a crash of the same reason happens in smc_getsockopt() or smc_switch_to_fallback(), this patch also checkes smc->clcsock in them too. And the caller of smc_switch_to_fallback() will identify whether fallback succeeds according to the return value.

What

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: local access → NULL Pointer Dereference → disrupt the affected service
Attack surface: Local
Privileges required: Low: a basic authenticated account is required
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-476 ↗
CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.

Denial of serviceCWE-476

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2022-53630Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2024-1422Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0800Multiples vulnérabilités dans le noyau Linux de SUSE

ecord?id=CVE-2021-47425 Référence CVE CVE-2021-47549 https://www.cve.org/CVERecord?id=CVE-2021-47549 Référence CVE CVE-2022-0854 https://www.cve.org/CVERecord?id=CVE-2022-0854 Référence CVE CVE-2022-20368 https://www.cve.org/CVERecord?id=CVE-2022-20368 Référence CVE CVE-2022-28748 https://www.cve.org/CVERecord?id=CVE-2022-28748 Référence CVE CVE-2022-2964 https://www.cve.org/CVERecord?id=CVE-2022-2964 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2022-48686 https://www.cve.org/CVERecord?id=CVE-2022-48686 Référence CVE CVE-2022-48751 https://www.cve.org/CVERecord?id=CVE-2022-48751 Référence CVE CVE-2022-48769 https://www.cve.org/CVERecord?id=CVE-2022-48769 Référence CVE CVE-2022-48775 https://www.cve.org/CVERecord?id=CVE-2022-48775 Référence CVE CVE-2022-48778 https://www.cve.org/CVERecord?id=CVE-2022-48778 Référence CVE CVE-2022-48786 https://www.cve.org/CVERecord?id=CVE-2022-48786 Référence CVE CVE-2022-48787 https://www.cve.org/CVERecord?id=CVE-2022-48787 Référence CVE CVE-2022-48788 https://www.cve.org/CVERecord?id=CVE-2022-48788 Référence CVE CVE-2022-48789 https://www.cve.org/CVERecord?id=CVE-2022-48789 Référence CVE CVE-2022-48790 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0779Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47373 Référence CVE CVE-2021-47425 https://www.cve.org/CVERecord?id=CVE-2021-47425 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47546 https://www.cve.org/CVERecord?id=CVE-2021-47546 Référence CVE CVE-2021-47549 https://www.cve.org/CVERecord?id=CVE-2021-47549 Référence CVE CVE-2022-38457 https://www.cve.org/CVERecord?id=CVE-2022-38457 Référence CVE CVE-2022-40133 https://www.cve.org/CVERecord?id=CVE-2022-40133 Référence CVE CVE-2022-48645 https://www.cve.org/CVERecord?id=CVE-2022-48645 Référence CVE CVE-2022-48706 https://www.cve.org/CVERecord?id=CVE-2022-48706 Référence CVE CVE-2022-48751 https://www.cve.org/CVERecord?id=CVE-2022-48751 Référence CVE CVE-2022-48769 https://www.cve.org/CVERecord?id=CVE-2022-48769 Référence CVE CVE-2022-48775 https://www.cve.org/CVERecord?id=CVE-2022-48775 Référence CVE CVE-2022-48778 https://www.cve.org/CVERecord?id=CVE-2022-48778 Référence CVE CVE-2022-48786 https://www.cve.org/CVERecord?id=CVE-2022-48786 Référence CVE CVE-2022-48787 https://www.cve.org/CVERecord?id=CVE-2022-48787 Référence CVE CVE-2022-48788 https://www.cve.org/CVERecord?id=CVE-2022-48788 Référence CVE CVE-2022-48789 https://www.cve.org/CVERecord?id=CVE-2022-48789 Référence CVE CVE-2022-48790 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0693Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-48739 Référence CVE CVE-2022-48740 https://www.cve.org/CVERecord?id=CVE-2022-48740 Référence CVE CVE-2022-48743 https://www.cve.org/CVERecord?id=CVE-2022-48743 Référence CVE CVE-2022-48744 https://www.cve.org/CVERecord?id=CVE-2022-48744 Référence CVE CVE-2022-48745 https://www.cve.org/CVERecord?id=CVE-2022-48745 Référence CVE CVE-2022-48746 https://www.cve.org/CVERecord?id=CVE-2022-48746 Référence CVE CVE-2022-48747 https://www.cve.org/CVERecord?id=CVE-2022-48747 Référence CVE CVE-2022-48748 https://www.cve.org/CVERecord?id=CVE-2022-48748 Référence CVE CVE-2022-48749 https://www.cve.org/CVERecord?id=CVE-2022-48749 Référence CVE CVE-2022-48751 https://www.cve.org/CVERecord?id=CVE-2022-48751 Référence CVE CVE-2022-48752 https://www.cve.org/CVERecord?id=CVE-2022-48752 Référence CVE CVE-2022-48753 https://www.cve.org/CVERecord?id=CVE-2022-48753 Référence CVE CVE-2022-48754 https://www.cve.org/CVERecord?id=CVE-2022-48754 Référence CVE CVE-2022-48755 https://www.cve.org/CVERecord?id=CVE-2022-48755 Référence CVE CVE-2022-48756 https://www.cve.org/CVERecord?id=CVE-2022-48756 Référence CVE CVE-2022-48758 https://www.cve.org/CVERecord?id=CVE-2022-48758 Référence CVE CVE-2022-48759 https://www.cve.org/CVERecord?id=CVE-2022-48759 Référence CVE CVE-2022-48760 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0578Multiples vulnérabilités dans le noyau Linux de SUSE

Official advisory

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: bpftool as a component of Red Hat Enterprise Linux 8; kernel as a component of Red Hat Enterprise Linux 8; kernel-abi-stablelists as a component of Red Hat Enterprise Linux 8; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8; kernel-core as a component of Red Hat Enterprise Linux 8; kernel-cross-headers as a component of Red Hat Enterprise Linux 8; kernel-debug as a component of Red Hat Enterprise Linux 8; kernel-debug-core as a component of Red Hat Enterprise Linux 8; kernel-debug-devel as a component of Red Hat Enterprise Linux 8; kernel-debug-modules as a component of Red Hat Enterprise Linux 8; kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-devel as a component of Red Hat Enterprise Linux 8; kernel-doc as a component of Red Hat Enterprise Linux 8; kernel-headers as a component of Red Hat Enterprise Linux 8; kernel-ipaclones-internal as a component of Red Hat Enterprise Linux 8; kernel-modules as a component of Red Hat Enterprise Linux 8; kernel-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-rt as a component of Red Hat Enterprise Linux 8; kernel-rt-core as a component of Red Hat Enterprise Linux 8; kernel-rt-debug as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-core as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-rt-devel as a component of Red Hat Enterprise Linux 8; kernel-rt-kvm as a component of Red Hat Enterprise Linux 8; and 126 more
Fixed: < 5.1; 5.15.19 ≤ 5.15.*; 5.16.5 ≤ 5.16.*; 5.17 ≤ *
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.

Evidence and provenance

Published 20 Jun 2024 · Last source change 5 Aug 2026, 08:52 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.2

CVSS sourceCNA

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2022-53630

Product sourceVendor CSAF · Red Hat Product Security

Remediation sourceVendor CSAF · Red Hat Product Security

CWE sourceNIST NVD

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2024-06-20CVE published

2026-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2022-53630↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

net/smc: Transitional solution for clcsock race issue

National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

EUVD-2022-53630

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.