CVE-2023-45898

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2023-10-16

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.4
• https://github.com/torvalds/linux/commit/768d612f79822d30a1e7d132a4d4b05337ce42ec
• https://lkml.org/lkml/2023/8/13/477
• https://lore.kernel.org/lkml/aa03f191-445c-0d2e-d6d7-0a3208d7df7a%40huawei.com/T/
• https://www.spinics.net/lists/stable-commits/msg317086.html

Check your stackJSON