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Full vulnerability report · 2024
CVE-2024-50293High confidence

net/smc: do not leave a dangling sk pointer in __smc_create()

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.

2 package states
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 releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, 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 feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, 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 feedCanonical record ↗Source updated 8 Sept 2026
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2024-44795

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
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not leave a dangling sk pointer in __smc_create() Thanks to commit 4bbd360a5084 ("socket: Print pf->create() when it does not clear sock->sk on failure."), syzbot found an issue with AF_SMC: smc_create must clear sock->sk on failure, family: 43, type: 1, protocol: 0 WARNING: CPU: 0 PID: 5827 at net/socket.c:1565 __sock_create+0x96f/0xa30 net/socket.c:1563 Modules linked in: CPU: 0 UID: 0 PID: 5827 Comm: syz-executor259 Not tainted 6.12.0-rc6-next-20241106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sock_create+0x96f/0xa30 net/socket.c:1563 Code: 03 00 74 08 4c 89 e7 e8 4f 3b 85 f8 49 8b 34 24 48 c7 c7 40 89 0c 8d 8b 54 24 04 8b 4c 24 0c 44 8b 44 24 08 e8 32 78 db f7 90 <0f> 0b 90 90 e9 d3 fd ff ff 89 e9 80 e1 07 fe c1 38 c1 0f 8c ee f7 RSP: 0018:ffffc90003e4fda0 EFLAGS: 00010246 RAX: 099c6f938c7f4700 RBX: 1ffffffff1a595fd RCX: ffff888034823c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000ffffffe9 R08: ffffffff81567052 R09: 1ffff920007c9f50 R10: dffffc0000000000 R11: fffff520007c9f51 R12: ffffffff8d2cafe8 R13: 1ffffffff1a595fe R14: ffffffff9a789c40 R15: ffff8880764298c0 FS: 000055557b518380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa62ff43225 CR3: 0000000031628000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> sock_create net/socket.c:1616 [inline] __sys_socket_create net/socket.c:1653 [inline] __sys_socket+0x150/0x3c0 net/socket.c:1700 __do_sys_socket net/socket.c:1714 [inline] __se_sys_socket net/socket.c:1712 [inline] For reference, see commit 2d859aff775d ("Merge branch 'do-not-leave-dangling-sk-pointers-in-pf-create-functions'")

What

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not leave a dangling sk pointer in __smc_create() Thanks to commit 4bbd360a5084 ("socket: Print pf->create() when it does not clear sock->sk on failure."), syzbot found an issue with AF_SMC: smc_create must clear sock->sk on failure, family: 43, type: 1, protocol: 0 WARNING: CPU: 0 PID: 5827 at net/socket.c:1565 __sock_create+0x96f/0xa30 net/socket.c:1563 Modules linked in: CPU: 0 UID: 0 PID: 5827 Comm: syz-executor259 Not tainted 6.12.0-rc6-next-20241106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sock_create+0x96f/0xa30 net/socket.c:1563 Code: 03 00 74 08 4c 89 e7 e8 4f 3b 85 f8 49 8b 34 24 48 c7 c7 40 89 0c 8d 8b 54 24 04 8b 4c 24 0c 44 8b 44 24 08 e8 32 78 db f7 90 <0f> 0b 90 90 e9 d3 fd ff ff 89 e9 80 e1 07 fe c1 38 c1 0f 8c ee f7 RSP: 0018:ffffc90003e4fda0 EFLAGS: 00010246 RAX: 099c6f938c7f4700 RBX: 1ffffffff1a595fd RCX: ffff888034823c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000ffffffe9 R08: ffffffff81567052 R09: 1ffff920007c9f50 R10: dffffc0000000000 R11: fffff520007c9f51 R12: ffffffff8d2cafe8 R13: 1ffffffff1a595fe R14: ffffffff9a789c40 R15: ffff8880764298c0 FS: 000055557b518380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa62ff43225 CR3: 0000000031628000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> sock_create net/socket.c:1616 [inline] __sys_socket_create net/socket.c:1653 [inline] __sys_socket+0x150/0x3c0 net/socket.c:1700 __do_sys_socket net/socket.c:1714 [inline] __se_sys_socket net/socket.c:1712 [inline] For reference, see commit 2d859aff775d ("Merge branch 'do-not-leave-dangling-sk-pointers-in-pf-create-functions'")

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not leave a dangling sk pointer in __smc_create() Thanks to commit 4bbd360a5084 ("socket: Print pf->create() when it does not clear sock->sk on failure."), syzbot found an issue with AF_SMC: smc_create must clear sock->sk on failure, family: 43, type: 1, protocol: 0 WARNING: CPU: 0 PID: 5827 at net/socket.c:1565 __sock_create+0x96f/0xa30 net/socket.c:1563 Modules linked in: CPU: 0 UID: 0 PID: 5827 Comm: syz-executor259 Not tainted 6.12.0-rc6-next-20241106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sock_create+0x96f/0xa30 net/socket.c:1563 Code: 03 00 74 08 4c 89 e7 e8 4f 3b 85 f8 49 8b 34 24 48 c7 c7 40 89 0c 8d 8b 54 24 04 8b 4c 24 0c 44 8b 44 24 08 e8 32 78 db f7 90 <0f> 0b 90 90 e9 d3 fd ff ff 89 e9 80 e1 07 fe c1 38 c1 0f 8c ee f7 RSP: 0018:ffffc90003e4fda0 EFLAGS: 00010246 RAX: 099c6f938c7f4700 RBX: 1ffffffff1a595fd RCX: ffff888034823c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000ffffffe9 R08: ffffffff81567052 R09: 1ffff920007c9f50 R10: dffffc0000000000 R11: fffff520007c9f51 R12: ffffffff8d2cafe8 R13: 1ffffffff1a595fe R14: ffffffff9a789c40 R15: ffff8880764298c0 FS: 000055557b518380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa62ff43225 CR3: 0000000031628000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> sock_create net/socket.c:1616 [inline] __sys_socket_create net/socket.c:1653 [inline] __sys_socket+0x150/0x3c0 net/socket.c:1700 __do_sys_socket net/socket.c:1714 [inline] __se_sys_socket net/socket.c:1712 [inline] For reference, see commit 2d859aff775d ("Merge branch 'do-not-leave-dangling-sk-pointers-in-pf-create-functions'")

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

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 → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
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-416 ↗

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

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.
CWE-416
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2024-3497Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Zustand herbeizuführen oderum einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0607Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2024-36959 Référence CVE CVE-2024-36978 https://www.cve.org/CVERecord?id=CVE-2024-36978 Référence CVE CVE-2024-38588 https://www.cve.org/CVERecord?id=CVE-2024-38588 Référence CVE CVE-2024-41085 https://www.cve.org/CVERecord?id=CVE-2024-41085 Référence CVE CVE-2024-43869 https://www.cve.org/CVERecord?id=CVE-2024-43869 Référence CVE CVE-2024-46800 https://www.cve.org/CVERecord?id=CVE-2024-46800 Référence CVE CVE-2024-49568 https://www.cve.org/CVERecord?id=CVE-2024-49568 Référence CVE CVE-2024-50034 https://www.cve.org/CVERecord?id=CVE-2024-50034 Référence CVE CVE-2024-50106 https://www.cve.org/CVERecord?id=CVE-2024-50106 Référence CVE CVE-2024-50293 https://www.cve.org/CVERecord?id=CVE-2024-50293 Référence CVE CVE-2024-53057 https://www.cve.org/CVERecord?id=CVE-2024-53057 Référence CVE CVE-2024-53125 https://www.cve.org/CVERecord?id=CVE-2024-53125 Référence CVE CVE-2024-53141 https://www.cve.org/CVERecord?id=CVE-2024-53141 Référence CVE CVE-2024-53197 https://www.cve.org/CVERecord?id=CVE-2024-53197 Référence CVE CVE-2024-56541 https://www.cve.org/CVERecord?id=CVE-2024-56541 Référence CVE CVE-2024-56613 https://www.cve.org/CVERecord?id=CVE-2024-56613 Référence CVE CVE-2024-56699 https://www.cve.org/CVERecord?id=CVE-2024-56699 Référence CVE CVE-2024-56770 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0587Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2024-27397 Référence CVE CVE-2024-35840 https://www.cve.org/CVERecord?id=CVE-2024-35840 Référence CVE CVE-2024-36978 https://www.cve.org/CVERecord?id=CVE-2024-36978 Référence CVE CVE-2024-41085 https://www.cve.org/CVERecord?id=CVE-2024-41085 Référence CVE CVE-2024-43869 https://www.cve.org/CVERecord?id=CVE-2024-43869 Référence CVE CVE-2024-46800 https://www.cve.org/CVERecord?id=CVE-2024-46800 Référence CVE CVE-2024-49568 https://www.cve.org/CVERecord?id=CVE-2024-49568 Référence CVE CVE-2024-50034 https://www.cve.org/CVERecord?id=CVE-2024-50034 Référence CVE CVE-2024-50106 https://www.cve.org/CVERecord?id=CVE-2024-50106 Référence CVE CVE-2024-50293 https://www.cve.org/CVERecord?id=CVE-2024-50293 Référence CVE CVE-2024-53125 https://www.cve.org/CVERecord?id=CVE-2024-53125 Référence CVE CVE-2024-53141 https://www.cve.org/CVERecord?id=CVE-2024-53141 Référence CVE CVE-2024-53168 https://www.cve.org/CVERecord?id=CVE-2024-53168 Référence CVE CVE-2024-53197 https://www.cve.org/CVERecord?id=CVE-2024-53197 Référence CVE CVE-2024-56541 https://www.cve.org/CVERecord?id=CVE-2024-56541 Référence CVE CVE-2024-56558 https://www.cve.org/CVERecord?id=CVE-2024-56558 Référence CVE CVE-2024-56613 https://www.cve.org/CVERecord?id=CVE-2024-56613 Référence CVE CVE-2024-56699 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0185Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-50284 Référence CVE CVE-2024-50285 https://www.cve.org/CVERecord?id=CVE-2024-50285 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50287 https://www.cve.org/CVERecord?id=CVE-2024-50287 Référence CVE CVE-2024-50288 https://www.cve.org/CVERecord?id=CVE-2024-50288 Référence CVE CVE-2024-50289 https://www.cve.org/CVERecord?id=CVE-2024-50289 Référence CVE CVE-2024-50290 https://www.cve.org/CVERecord?id=CVE-2024-50290 Référence CVE CVE-2024-50291 https://www.cve.org/CVERecord?id=CVE-2024-50291 Référence CVE CVE-2024-50292 https://www.cve.org/CVERecord?id=CVE-2024-50292 Référence CVE CVE-2024-50293 https://www.cve.org/CVERecord?id=CVE-2024-50293 Référence CVE CVE-2024-50294 https://www.cve.org/CVERecord?id=CVE-2024-50294 Référence CVE CVE-2024-50295 https://www.cve.org/CVERecord?id=CVE-2024-50295 Référence CVE CVE-2024-50296 https://www.cve.org/CVERecord?id=CVE-2024-50296 Référence CVE CVE-2024-50297 https://www.cve.org/CVERecord?id=CVE-2024-50297 Référence CVE CVE-2024-50298 https://www.cve.org/CVERecord?id=CVE-2024-50298 Référence CVE CVE-2024-50299 https://www.cve.org/CVERecord?id=CVE-2024-50299 Référence CVE CVE-2024-50300 https://www.cve.org/CVERecord?id=CVE-2024-50300 Référence CVE CVE-2024-50301 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0152Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-50284 Référence CVE CVE-2024-50285 https://www.cve.org/CVERecord?id=CVE-2024-50285 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50287 https://www.cve.org/CVERecord?id=CVE-2024-50287 Référence CVE CVE-2024-50288 https://www.cve.org/CVERecord?id=CVE-2024-50288 Référence CVE CVE-2024-50289 https://www.cve.org/CVERecord?id=CVE-2024-50289 Référence CVE CVE-2024-50290 https://www.cve.org/CVERecord?id=CVE-2024-50290 Référence CVE CVE-2024-50291 https://www.cve.org/CVERecord?id=CVE-2024-50291 Référence CVE CVE-2024-50292 https://www.cve.org/CVERecord?id=CVE-2024-50292 Référence CVE CVE-2024-50293 https://www.cve.org/CVERecord?id=CVE-2024-50293 Référence CVE CVE-2024-50294 https://www.cve.org/CVERecord?id=CVE-2024-50294 Référence CVE CVE-2024-50295 https://www.cve.org/CVERecord?id=CVE-2024-50295 Référence CVE CVE-2024-50296 https://www.cve.org/CVERecord?id=CVE-2024-50296 Référence CVE CVE-2024-50297 https://www.cve.org/CVERecord?id=CVE-2024-50297 Référence CVE CVE-2024-50298 https://www.cve.org/CVERecord?id=CVE-2024-50298 Référence CVE CVE-2024-50299 https://www.cve.org/CVERecord?id=CVE-2024-50299 Référence CVE CVE-2024-50300 https://www.cve.org/CVERecord?id=CVE-2024-50300 Référence CVE CVE-2024-50301 https://www.cve.org/CVERecord?id=

Official advisory
03

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
d25a92ccae6bed02327b63d138e12e7806830f78 < d2cc492124e1f22daa1700f069bcc58788043381; d25a92ccae6bed02327b63d138e12e7806830f78 < d293958a8595ba566fb90b99da4d6263e14fee15; 6.11
Fixed
< 6.11; 6.11.8 ≤ 6.11.*; 6.12 ≤ *
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.
04

Evidence and provenance

Published 19 Nov 2024 · Last source change 5 Aug 2026, 11:43 UTC · CWE-416 · Use After Free

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-2024-44795
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
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.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2024-44795↗CVE authority or vendor 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.
Free version - for non-commercial use only.CVE-2024-50293 · cve.blacktree.nl