What’s Vulnerable › Vulnerabilities

CVE-2023-28772

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-23 · updated 2026-06-17
• Weakness: CWE-120

Description

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 kernel: from 2.6.27 before 4.4.276; from 4.5 before 4.9.276; from 4.10 before 4.14.240; from 4.15 before 4.19.198; from 4.20 before 5.4.133; from 5.5 before 5.10.51 — fixed in 4.14.240, 4.19.198, 4.4.276, 4.9.276, 5.10.51, 5.12.18

How to fix

Upgrade to a fixed version: Linux kernel 4.14.240, 4.19.198, 4.4.276, 4.9.276. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
• https://github.com/torvalds/linux/commit/d3b16034a24a112bb83aeb669ac5b9b01f744bb7
• https://lkml.kernel.org/r/20210626032156.47889-1-yun.zhou%40windriver.com
• https://lore.kernel.org/lkml/20210625122453.5e2fe304%40oasis.local.home/
• https://security.netapp.com/advisory/ntap-20230427-0005/
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
• https://github.com/torvalds/linux/commit/d3b16034a24a112bb83aeb669ac5b9b01f744bb7
• https://lkml.kernel.org/r/20210626032156.47889-1-yun.zhou%40windriver.com
• https://lore.kernel.org/lkml/20210625122453.5e2fe304%40oasis.local.home/
• https://security.netapp.com/advisory/ntap-20230427-0005/

Get alerted when CVE-2023-28772 or the next vulnerability affects your stack