NVD / CVE Program· CNA Linux

CVE-2023-52798: wifi: ath11k: fix dfs radar event locking

HighCVSS 8.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

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: 1% (FIRST EPSS); higher than 64% of all records.
Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 1fd878e1750190a612b5de2af357cca422ec0822, 21ebb0aba580d347e12f01ce5f6e75044427b3d5, 3b6c14833165f689cc5928574ebafe52bbce5f1e.

Low priority for now. Upgrade to Linux Linux 1fd878e1750190a612b5de2af357cca422ec0822, 21ebb0aba580d347e12f01ce5f6e75044427b3d5, 3b6c14833165f689cc5928574ebafe52bbce5f1e 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: ath11k: fix dfs radar event locking The ath11k active pdevs are protected by RCU but the DFS radar event handling code calling ath11k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as an RCU read-side critical section to avoid any potential use-after-free issues. Compile tested only.

BDU:2025-07410

Published: May 21, 2024
Updated: Aug 5, 2026
EPSS: 1.0% · 64th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.0%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Linux: 8.8; NVD has not scored this yet; the score shown is the CNA’s.

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.

Is your version affected? Check it

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
- 5.6affected
- d5c65159f2895379e11ca13f62feabe93278985d and later · before f882f51905517575c9f793a3dff567af90ef9a10affected · git
- d5c65159f2895379e11ca13f62feabe93278985d and later · before 426e718ce9ba60013364a54233feee309356cb82affected · git
- d5c65159f2895379e11ca13f62feabe93278985d and later · before ca420ac4f9451f22347bae44b18ab47ba2c267ecaffected · git
- d5c65159f2895379e11ca13f62feabe93278985d and later · before 1fd878e1750190a612b5de2af357cca422ec0822affected · git
- d5c65159f2895379e11ca13f62feabe93278985d and later · before 21ebb0aba580d347e12f01ce5f6e75044427b3d5affected · git
- d5c65159f2895379e11ca13f62feabe93278985d and later · before 3b6c14833165f689cc5928574ebafe52bbce5f1eaffected · git
- before 5.6not affected · semver
- 5.10.202 and later · up to and including 5.10.*not affected · semver
- 5.15.140 and later · up to and including 5.15.*not affected · semver

Affected versions · NVD (5)

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

linux linux kernel5.6 and later · before 5.10.202
linux linux kernel5.11 and later · before 5.15.140
linux linux kernel5.16 and later · before 6.1.64
linux linux kernel6.2 and later · before 6.5.13
linux linux kernel6.6 and later · before 6.6.3

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.64-1	6.1.64-1
Debian:13	linux	before 6.6.8-1	6.6.8-1

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-2023-52796May 21, 2024 · ipvlan: add ipvlan_route_v6_outbound() helper
31Monitor
← EarlierCVE-2023-52797May 21, 2024 · drivers: perf: Check find_first_bit() return value
22Monitor
Later →CVE-2023-52799May 21, 2024 · jfs: fix array-index-out-of-bounds in dbFindLeaf
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	1fd878e1750190a612b5de2af357cca422ec0822	Vendor (CNA)
Linux Linux	21ebb0aba580d347e12f01ce5f6e75044427b3d5	Vendor (CNA)
Linux Linux	3b6c14833165f689cc5928574ebafe52bbce5f1e	Vendor (CNA)
Linux Linux	426e718ce9ba60013364a54233feee309356cb82	Vendor (CNA)
Linux Linux	ca420ac4f9451f22347bae44b18ab47ba2c267ec	Vendor (CNA)
Linux Linux	f882f51905517575c9f793a3dff567af90ef9a10	Vendor (CNA)
debian:linux	6.1.64-1 · Debian:12	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.

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 on the same network segment can trigger it.
No account or password is required.
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: Adjacent
Attack complexity: Low
Privileges required: None
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

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, 10:10 PM UTC

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

References

git.kernel.org/stable/c/1fd878e1750190a612b5de2af357cca422ec0822

Show all references (5 more)

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

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