What’s Vulnerable › Vulnerabilities

CVE-2023-1855

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-05 · updated 2026-06-17
• Weakness: CWE-416

Description

A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware Monitoring Linux Kernel Driver (xgene-hwmon). This flaw could allow a local attacker to crash the system due to a race problem. This vulnerability could even lead to a kernel information leak problem.

Affected products

• Debian Linux: 10.0
• Linux kernel: before 6.3; from 4.9 before 4.14.311; from 4.15 before 4.19.279; from 4.20 before 5.4.238; from 5.5 before 5.10.176; from 5.11 before 5.15.104 — fixed in 4.14.311, 4.19.279, 5.10.176, 5.15.104, 5.4.238, 6.1.21

How to fix

Upgrade to a fixed version: Linux kernel 4.14.311, 4.19.279, 5.10.176, 5.15.104. Check the vendor advisory for mitigations.

References

• https://github.com/torvalds/linux/commit/cb090e64cf25602b9adaf32d5dfc9c8bec493cd1
• https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://lore.kernel.org/all/20230318122758.2140868-1-linux%40roeck-us.net/
• https://github.com/torvalds/linux/commit/cb090e64cf25602b9adaf32d5dfc9c8bec493cd1
• https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://lore.kernel.org/all/20230318122758.2140868-1-linux%40roeck-us.net/

Get alerted when CVE-2023-1855 or the next vulnerability affects your stack