CVE-2024-36896
What it is
In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix access violation during port device removal Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value. It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems. The same bug exists in the disable_show() routine, and it can be fixed the same way.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data tampering, service disruption.
- Exploit odds
- 0.9% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.9% in the next 30 days (EPSS).
- Severity: 9.1 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.9% · EPSS, next 30 days
- Weakness
- CWE-476 · NULL pointer dereference
- Record status
- Analyzed
Affected
- Linux Kernel < 6.1.91
- Linux Kernel < 6.6.31
- Linux Kernel < 6.8.10
- Linux Kernel 6.9
Attack profile CVSS 3.1 · 9.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-36896.md and follow it. Check whether this project is affected by CVE-2024-36896. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce
References
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce