Use After Free in Linux
CVE-2021-47470
In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential use-after-free in slab_debugfs_fops When sysfs_slab_add failed, we shouldn't call debugfs_slab_add() for s because s will be freed soon. And slab_debugfs_fops will use s later leading to a use-after-free.
Vulnerability class: Use-After-Free
EPSS: 0.002 (10.3th 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 64dd68497be76ab4e237cca06f5324e220d0f050, 5.14, 0
- Linux Linux_kernel — versions 5.15
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-47470?
- CVE-2021-47470 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2024-05-22.
- How severe is CVE-2021-47470?
- High severity. CVSS v3 base score is 7.8 out of 10.