What’s Vulnerable › Vulnerabilities
CVE-2021-40490
- Severity: high (CVSS 7.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-09-03 · updated 2026-08-13
- Weakness: CWE-362
Description
A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13.
Affected products
- Debian Linux: 9.0, 11.0
- Fedoraproject Fedora: 33, 34
- Linux kernel: from 3.8 before 4.4.284; from 4.5 before 4.9.283; from 4.10 before 4.14.247; from 4.15 before 4.19.207; from 4.20 before 5.4.145; from 5.5 before 5.10.63 — fixed in 4.14.247, 4.19.207, 4.4.284, 4.9.283, 5.10.63, 5.13.15
- NetApp Aff A250 Firmware: all versions
- NetApp Fas 500F Firmware: all versions
- NetApp H300E Firmware: all versions
- NetApp H300S Firmware: all versions
- NetApp H410C Firmware: all versions
- NetApp H410S Firmware: all versions
- NetApp H500E Firmware: all versions
- NetApp H500S Firmware: all versions
- NetApp H610C Firmware: all versions
- NetApp H610S Firmware: all versions
- NetApp H615C Firmware: all versions
- NetApp H700E Firmware: all versions
- NetApp H700S Firmware: all versions
- NetApp Solidfire Baseboard Management Controller: all versions
How to fix
Upgrade to a fixed version: Linux kernel 4.14.247, 4.19.207, 4.4.284, 4.9.283. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=9e445093e523f3277081314c864f708fd4bd34aa
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6VS2DLGT7TK7URKAS2KWJL3S533SGVA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XJGX3DMJT6MRBW2XEF3TWVHYWZW3DG3N/
- https://security.netapp.com/advisory/ntap-20211004-0001/
- https://www.debian.org/security/2021/dsa-4978
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=9e445093e523f3277081314c864f708fd4bd34aa
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6VS2DLGT7TK7URKAS2KWJL3S533SGVA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XJGX3DMJT6MRBW2XEF3TWVHYWZW3DG3N/
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