Medium 5.5Published May 27, 2026

CVE-2026-46098net: caif: clear client service pointer on teardown

Updated under an hour ago (Oct 26, 2026, 12:50 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before cffca7a18b8f9de7c3d3013a1f5740c412b2a501; 43e3692101086add8719c3b8b50b05c9ac5b14e1 builds before 7ef97d4675b05a103648bd9244d91dff7d8c08b0; from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before e16859f3f4426fa349bc5519d582a93d28f5a15d; from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before 914c6456fcfc21a3d553945dff62fd1621d6155d; 43e3692101086add8719c3b8b50b05c9ac5b14e1 builds before 3ac6db584d9d420267bb8413115707eeec76d9cf; from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before 63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9; from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before a4b191ddc12c55ddb62feb096536f819f384d6f1; from 43e3692101086add8719c3b8b50b05c9ac5b14e1 before f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8	CNA record
linux linux_kernel linux:linux_kernel	from 3.0 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/cffca7a18b8f9de7c3d3013a1f5740c412b2a501	patch
https://git.kernel.org/stable/c/7ef97d4675b05a103648bd9244d91dff7d8c08b0	patch
https://git.kernel.org/stable/c/e16859f3f4426fa349bc5519d582a93d28f5a15d	patch
https://git.kernel.org/stable/c/914c6456fcfc21a3d553945dff62fd1621d6155d	patch
https://git.kernel.org/stable/c/3ac6db584d9d420267bb8413115707eeec76d9cf	patch
https://git.kernel.org/stable/c/63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9	patch
https://git.kernel.org/stable/c/a4b191ddc12c55ddb62feb096536f819f384d6f1	patch
https://git.kernel.org/stable/c/f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.