CVE-2023-28772: Linux Kernel

Medium severity, CVSS 6.7. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow.

Affected products

• Linux Linux Kernel: from 2.6.27, before 4.4.276 (fixed in 4.4.276); from 4.5, before 4.9.276 (fixed in 4.9.276); from 4.10, before 4.14.240 (fixed in 4.14.240); from 4.15, before 4.19.198 (fixed in 4.19.198); from 4.20, before 5.4.133 (fixed in 5.4.133); from 5.5, before 5.10.51 (fixed in 5.10.51); …

Published 2023-03-23. Last modified 2026-06-17.