Mmastodon TechnologyCybersecurity first seen 13 d ago, last 13 d ago, peak #4

Linux kernel ext4 use-after-free flaw scored 7.8

Original: 🚨 EUVD-2023-50161 📊 Score: 7.8/10 (CVSS v3.1) 📅 Published: 2023-10-16 | Updated: 2026-10-15 📝 The Linux kernel before 6.

A vulnerability catalogued as EUVD-2023-50161 affects the Linux kernel before version 6.5.4: a use-after-free bug in the ext4 filesystem code, specifically in the ext4_es_insert_extent function in fs/ext4/extents_status.c. The flaw carries a CVSS v3.1 score of 7.8 and was published in the EU vulnerability database on 16 October 2023, with a recent update keeping it visible. Admins are advised to patch to kernel 6.5.4 or later.

Why now: The entry was recently updated in the EU vulnerability database, putting the ext4 kernel flaw back in front of security watchers.

Linux kernelext4ENISAEUVD-2023-50161

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Evidence

• 🚨 EUVD-2023-50161 📊 Score: 7.8/10 (CVSS v3.1) 📅 Published: 2023-10-16 | Updated: 2026-10-15 📝 The Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent. 🔗 https:// euvd.enisa.europa.eu/vulnerabi lity/EUVD-2023-50161 #… · EUVD_Bot

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