CVE-2022-48663: gpio: mockup: fix NULL pointer dereference when removing debugfs
Vulnerability summary
CVE-2022-48663 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% 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 5 · Related 5Timeline
- 28-04-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: gpio: mockup: fix NULL pointer dereference when removing debugfs We now remove the device's debugfs entries when unbinding the driver. This now causes a NULL-pointer dereference on module exit because the platform devices are unregistered *after* the global debugfs directory has been recursively removed. Fix it by unregistering the devices first.
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
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% 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.
Ubuntu62 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ 3815e66c2183f3430490e450ba16779cf5214ec6, < bdea98b98f844bd8a983ca880893e509a8b4162f | ≥ 3a10e8edee2b45a654f1f7b05f747129ec84cf9d, < 18352095a0d581f6aeb1e9fc9d68cc0152cd64b4 | ≥ bc55c1677edbe86a1c66a35e800df47dff16ad61, < af0bfabf06c74c260265c30ba81a34e7dec0e881 | ≥ 303e6da99429510b1e4edf833afe90ac8542e747, < b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68 | ≥ 5.10.144, < 5.10.146 | ≥ 5.15.69, < 5.15.71 | ≥ 5.19.10, < 5.19.12
- linux_kernel≥ 5.10.144, < 5.10.146 | ≥ 5.15.69, < 5.15.71 | ≥ 5.19.10, < 5.19.12
Debian1 product
- linux< 6.0.2-1
3 vendors · 65 products
