CVE-2026-53157
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0Patch
- https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578Patch
- https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001Patch
- https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763Patch
- https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296Patch
- https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906aPatch
- https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113Patch
- https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.