Buffer overflow in Linux
CVE-2026-45991
In the Linux kernel, the following vulnerability has been resolved: udf: fix partition descriptor append bookkeeping Mounting a crafted UDF image with repeated partition descriptors can trigger a heap out-of-bounds write in part_descs_lo…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (6.5th 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 5.15.210, 6.1.176, 4.18.7
- Linux Linux_kernel — versions 4.19
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-45991?
- CVE-2026-45991 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-05-27.
- How severe is CVE-2026-45991?
- High severity. CVSS v3 base score is 7.8 out of 10.