CVE-2023-52863: hwmon: (axi-fan-control) Fix possible NULL pointer dereference
Vulnerability summary
CVE-2023-52863 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (axi-fan-control) Fix possible NULL pointer dereference axi_fan_control_irq_handler(), dependent on the private axi_fan_control_data structure, might be called before the hwmon device is registered. That will cause an "Unable to handle kernel NULL pointer dereference" error.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu104 products
- linux< 5.15.0-100.110
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1056.61
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < 7d870088db4863c514a7f8751cd593751983029a | ≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < b3e7eb23a6e97642ff3190431c06475d9ca1e062 | ≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < 33de53a2706066d526173dc743faf43d92c62105 | ≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < f62b8969847850ba7596cb145cc47c65ea57dae0 | ≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < c49f14cc1bb12c625a1c572e8a95b6adefd4d8eb | ≥ 8412b410fa5e1e494a0fec84c3c462d49870d3f5, < 2a5b3370a1d9750eca325292e291c8c7cb8cf2e0 | 5.7
- linux_kernel≥ 5.7, < 5.10.201 | ≥ 5.11, < 5.15.139 | ≥ 5.16, < 6.1.63 | ≥ 6.2, < 6.5.12 | ≥ 6.6, < 6.6.2
Debian1 product
- linux< 6.1.64-1 | < 6.6.8-1
3 vendors · 107 products
