CVE Catalog

CVE-2026-46098

MediumCVSS 5.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.12%

2th percentile - higher than 2% of all known CVEs

Summary

In the Linux kernel's CAIF subsystem, a vulnerability exists where `caif_connect()` does not clear the client service pointer (`adap_layer->dn`) during teardown, leading to a use-after-free when the socket is destroyed.

Risk Assessment

An attacker could exploit this vulnerability to cause a kernel panic or potentially escalate privileges by controlling the freed memory.

Recommendation

Immediately update the Linux kernel to a version containing the fix that clears client service pointers before releasing the service object.

Related vulnerabilities

Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS