Use After Free in Linux
CVE-2020-36788
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: avoid a use-after-free when BO init fails nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm_bo_init() invokes the provided destructor which should de-initialize and free the memory. Thus, when nouveau_bo_init() returns an error the gem object has already been released and the memory freed by nouveau_bo_del_ttm().
Vulnerability class: Use-After-Free
EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, 5.4, 0
- Linux Linux_kernel — versions 5.15
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2020-36788?
- CVE-2020-36788 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2024-05-21.
- How severe is CVE-2020-36788?
- High severity. CVSS v3 base score is 7.8 out of 10.