CVE-2026-53157
net: phonet: free phonet_device after RCU grace period
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001
- https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113
- https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296
- https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9
- https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763
References (8)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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