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Vulnerability record · CVE-2026-53157 · published 25 June 2026

CVE-2026-53157: Linux kernel use after free vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonet_device after RCU grace period phonet_device_destroy() removes a phonet_device from the per-net device list with list_del_rcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free. Use kfree_rcu(), matching the lifetime rule already used by phonet_address_del() for the same object type.

7.8 CVSS 3.1 High EPSS 0.13% · top 98.1% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
7 Jul 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonet_device after RCU grace period phonet_device_destroy() removes a phonet_device from the per-net device list with list_del_rcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free. Use kfree_rcu(), matching the lifetime rule already used by phonet_address_del() for the same object type.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0 Patch
https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578 Patch
https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001 Patch
https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763 Patch
https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296 Patch
https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906a Patch
https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113 Patch
https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-53157), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.