Double Free in Linux
CVE-2024-27392
In the Linux kernel, the following vulnerability has been resolved: nvme: host: fix double-free of struct nvme_id_ns in ns_update_nuse() When nvme_identify_ns() fails, it frees the pointer to the struct nvme_id_ns before it returns. However, ns_update_nuse() calls kfree() for the pointer even when nvme_identify_ns() fails. This results in KASAN double-free, which was observed with blktests nvme/045 with proposed patches [1] on the kernel v6.8-rc7. Fix the double-free by skipping kfree() when nvme_identify_ns() fails.
Vulnerability class: Double Free
EPSS: 0.003 (17.5th 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 a1a825ab6a60380240ca136596732fdb80bad87a, 6.8, 0
- Linux Linux_kernel
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2024-27392?
- CVE-2024-27392 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2024-05-01.
- How severe is CVE-2024-27392?
- High severity. CVSS v3 base score is 7.8 out of 10.