CVE-2024-38554
Published: June 21, 2024Last modified: June 21, 2024
Description
In the Linux kernel, the following vulnerability has been resolved: ax25: Fix reference count leak issue of net_device There is a reference count leak issue of the object "net_device" in ax25_dev_device_down(). When the ax25 device is shutting down, the ax25_dev_device_down() drops the reference count of net_device one or zero times depending on if we goto unlock_put or not, which will cause memory leak. In order to solve the above issue, decrease the reference count of net_device after dev->ax25_ptr is set to null.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.97-r0) |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/36e56b1b002bb26440403053f19f9e1a8bc075b2
- https://git.kernel.org/stable/c/3ec437f9bbae68e9b38115c4c91de995f73f6bad
- https://git.kernel.org/stable/c/8bad3a20a27be8d935f2aae08d3c6e743754944a
- https://git.kernel.org/stable/c/965d940fb7414b310a22666503d2af69459c981b
- https://git.kernel.org/stable/c/eef95df9b752699bddecefa851f64858247246e9