Bugzilla – Bug 1226742
VUL-0: CVE-2024-38554: kernel: ax25: Fix reference count leak issue of net_device
Last modified: 2024-07-08 15:12:50 UTC
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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-38554 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-38554.mbox https://git.kernel.org/stable/c/3ec437f9bbae68e9b38115c4c91de995f73f6bad https://git.kernel.org/stable/c/965d940fb7414b310a22666503d2af69459c981b https://git.kernel.org/stable/c/8bad3a20a27be8d935f2aae08d3c6e743754944a https://git.kernel.org/stable/c/eef95df9b752699bddecefa851f64858247246e9 https://git.kernel.org/stable/c/36e56b1b002bb26440403053f19f9e1a8bc075b2 https://www.cve.org/CVERecord?id=CVE-2024-38554 https://bugzilla.redhat.com/show_bug.cgi?id=2293445