NVD / CVE Program· CNA Linux

CVE-2023-52530: wifi: mac80211: fix potential key use-after-free

HighCVSS 7.8 · v3.1—No exploit Fix available

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: 0.34% (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 2408f491ff998d674707725eadc47d8930aced09, 2f4e16e39e4f5e78248dd9e51276a83203950b36, 3.17.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2408f491ff998d674707725eadc47d8930aced09, 2f4e16e39e4f5e78248dd9e51276a83203950b36, 3.17 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: wifi: mac80211: fix potential key use-after-free When ieee80211_key_link() is called by ieee80211_gtk_rekey_add() but returns 0 due to KRACK protection (identical key reinstall), ieee80211_gtk_rekey_add() will still return a pointer into the key, in a potential use-after-free. This normally doesn't happen since it's only called by iwlwifi in case of WoWLAN rekey offload which has its own KRACK protection, but still better to fix, do that by returning an error code and converting that to success on the cfg80211 boundary only, leaving the error for bad callers of ieee80211_gtk_rekey_add().

Memory safety

Published: Mar 2, 2024
Updated: Aug 5, 2026
EPSS: 0.3% · 28th 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 · 0.3%

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: 8.8; 1.0 point gap

CVSS:3.1/AV:A/AC:L/PR:N/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.

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.

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

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
- ef810e7c3d2a8fb3bbd23726599c487c30ea747e, a0a8a11d1630cd648dc1ce86da620b4e240e0315, 6891c6fd2a500d1f39d1426765f610bdc2c2a39d, 003aa22c9619b49efe950aca3aebd1235a04940d, 6440f0ee8a1779f53526bccb9de00914daeb9094, 2586fa0007dc6b7745da14250be7e3aae706b128, a9ab1b2e30e898440a22d7b1d7a5b0b7c6a8791f, 4.14affected
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before 2408f491ff998d674707725eadc47d8930aced09affected · git
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before e8e599a635066c50ac214c3e10858f1d37e03022affected · git
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before e8a834eb09bb95c2bf9c76f1a28ecef7d8c439d0affected · git
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before 2f4e16e39e4f5e78248dd9e51276a83203950b36affected · git
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before 65c72a7201704574dace708cbc96a8f367b1491daffected · git
- fdf7cb4185b60c68e1a75e61691c4afdc15dea0e and later · before 31db78a4923ef5e2008f2eed321811ca79e7f71baffected · git
- 3.2.95 and later · before 3.3affected · semver
- 3.16.50 and later · before 3.17affected · semver
- 3.18.82 and later · before 3.19affected · semver

Affected versions · NVD (6)

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

linux linux kernel4.14 and later · before 5.4.285
linux linux kernel5.5 and later · before 5.10.288
linux linux kernel5.11 and later · before 5.15.169
linux linux kernel5.16 and later · before 6.1.57
linux linux kernel6.2 and later · before 6.5.7
linux linux kernel6.6

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:11	linux	before 5.10.234-1	5.10.234-1
Debian:12	linux	before 6.1.64-1	6.1.64-1
Debian:13	linux	before 6.5.8-1	6.5.8-1
Red Hat:rhel_aus:8.6::baseos	bpftool	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	bpftool-debuginfo	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-abi-stablelists	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-core	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug-core	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug-debuginfo	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug-devel	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug-modules	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debug-modules-extra	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debuginfo	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-debuginfo-common-x86_64	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-devel	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-doc	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-modules	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-modules-extra	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-tools	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-tools-debuginfo	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	kernel-tools-libs	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6
Red Hat:rhel_aus:8.6::baseos	perf	before 0:4.18.0-372.107.1.el8_6	0:4.18.0-372.107.1.el8_6

+46

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-2023-52528Mar 2, 2024 · net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg
22Monitor
← EarlierCVE-2023-52529Mar 2, 2024 · HID: sony: Fix a potential memory leak in sony_probe()
24Monitor
Later →CVE-2023-52531Mar 2, 2024 · wifi: iwlwifi: mvm: Fix a memory corruption issue
31Monitor

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	2408f491ff998d674707725eadc47d8930aced09	Vendor (CNA)
Linux Linux	2f4e16e39e4f5e78248dd9e51276a83203950b36	Vendor (CNA)
Linux Linux	3.17	Vendor (CNA)
Linux Linux	3.19	Vendor (CNA)
Linux Linux	3.3	Vendor (CNA)
Linux Linux	31db78a4923ef5e2008f2eed321811ca79e7f71b	Vendor (CNA)
Linux Linux	4.10	Vendor (CNA)
Linux Linux	4.14	Vendor (CNA)
Linux Linux	4.2	Vendor (CNA)
Linux Linux	4.5	Vendor (CNA)
Linux Linux	65c72a7201704574dace708cbc96a8f367b1491d	Vendor (CNA)
Linux Linux	e8a834eb09bb95c2bf9c76f1a28ecef7d8c439d0	Vendor (CNA)
Linux Linux	e8e599a635066c50ac214c3e10858f1d37e03022	Vendor (CNA)
debian:linux	6.1.64-1 · Debian:12	Package registry (OSV)
red hat:bpftool	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:bpftool-debuginfo	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-abi-stablelists	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-core	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug-core	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug-debuginfo	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug-devel	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug-modules	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debug-modules-extra	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	Package registry (OSV)
red hat:kernel-debuginfo	0:4.18.0-372.107.1.el8_6 · Red Hat:rhel_aus:8.6::baseos	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.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-24-0160 · Mar 4, 2024(Linux Kernel Güncellemesi)

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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 (1)

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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

References

git.kernel.org/stable/c/2408f491ff998d674707725eadc47d8930aced09

Show all references (6 more)

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

All records