CVE-2024-47141

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Source
https://cve.org/CVERecord?id=CVE-2024-47141
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-47141.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-47141
Downstream
Related
Published
2025-01-11T12:25:12.399Z
Modified
2026-03-11T07:50:41.019986Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
pinmux: Use sequential access to access desc->pinmux data
Details

In the Linux kernel, the following vulnerability has been resolved:

pinmux: Use sequential access to access desc->pinmux data

When two client of the same gpio call pinctrlselectstate() for the same functionality, we are seeing NULL pointer issue while accessing desc->mux_owner.

Let's say two processes A, B executing in pinrequest() for the same pin and process A updates the desc->muxusecount but not yet updated the desc->muxowner while process B see the desc->muxusecount which got updated by A path and further executes strcmp and while accessing desc->mux_owner it crashes with NULL pointer.

Serialize the access to mux related setting with a mutex lock.

cpu0 (process A)            cpu1(process B)

pinctrlselectstate() { pinctrlselectstate() { pinrequest() { pinrequest() { ... .... } else { desc->muxusecount++; desc->muxusecount && strcmp(desc->mux_owner, owner)) {

     if (desc->mux_usecount > 1)
           return 0;
     desc->mux_owner = owner;

} }

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47141.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
42fed7ba44e4e8c1fb27b28ad14490cb1daff3c7
Fixed
2da32aed4a97ca1d70fb8b77926f72f30ce5fb4b
Fixed
c11e2ec9a780f54982a187ee10ffd1b810715c85
Fixed
5a3e85c3c397c781393ea5fb2f45b1f60f8a4e6e

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-47141.json"