CVE-2026-93163

hwrng: core - fix rng list on registration error

N/A
Published: September 17, 2026 at 04:11 PM UTC
Updated: October 30, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: hwrng: core - fix rng list on registration error hwrng_register(rng) does the following: 1. Checks if rng has name and read methods set 2. Checks if the name already exists 3. Adds rng to global rng_list 4. May try to set rng to current_rng If step 4 fails, it returns an error. However, it does not remove the rng from rng_list, causing a dangling reference which can result in use-after-free if the caller frees rng, since registration failed. Add a list_del_init() cleanup step.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2bbb6983887fefc8026beab01198d30f47b7bd224.144.9.32042802952a2725f85f7e36ee3b29593af5fe87197
Vendor states this is fixed in 3a5834db2b1ce25649f330e78efe1ccde78967fd (fixed)
Vendor states this is fixed in bee8d1fcdc8f389b595b0a4cf6fe8440f499458a (fixed)
Vendor states this is fixed in cf293c9c7424de0d04b51367d07f40570ce80231 (fixed)
Vendor states this is fixed in de4f1bcb61a73cc896decdbd27d61a34add93b53 (fixed)
Affected range stops below 4.10, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 4.14 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card