CVE-2019-19767

The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

• CWE-416

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://bugzilla.kernel.org/show_bug.cgi?id=205609Exploit, Issue Tracking, Vendor Advisory
• https://bugzilla.kernel.org/show_bug.cgi?id=205707Issue Tracking, Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55aPatch, Vendor Advisory
• https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55aPatch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
• https://security.netapp.com/advisory/ntap-20200103-0001/
• https://usn.ubuntu.com/4258-1/
• https://usn.ubuntu.com/4284-1/
• https://usn.ubuntu.com/4287-1/
• https://usn.ubuntu.com/4287-2/
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://bugzilla.kernel.org/show_bug.cgi?id=205609Exploit, Issue Tracking, Vendor Advisory
• https://bugzilla.kernel.org/show_bug.cgi?id=205707Issue Tracking, Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55aPatch, Vendor Advisory
• https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55aPatch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
• https://security.netapp.com/advisory/ntap-20200103-0001/
• https://usn.ubuntu.com/4258-1/
• https://usn.ubuntu.com/4284-1/
• https://usn.ubuntu.com/4287-1/
• https://usn.ubuntu.com/4287-2/

Published

Dec 12, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-19761Rejected reason: This CVE ID has been rejected or withdrawn …
• CVE-2019-19762Rejected reason: Unused CVE for 2019
• CVE-2019-19763Rejected reason: Unused CVE for 2019
• CVE-2019-19764Rejected reason: Unused CVE for 2019
• CVE-2019-19765Rejected reason: Unused CVE for 2019
• CVE-2019-19766The Bitwarden server through 1.32.0 has a potentially unwant…7.5
• CVE-2019-19768In the Linux kernel 5.4.0-rc2, there is a use-after-free (re…7.5
• CVE-2019-19769In the Linux kernel 5.3.10, there is a use-after-free (read)…6.7
• CVE-2019-1977A vulnerability within the Endpoint Learning feature of Cisc…6.8
• CVE-2019-19770In the Linux kernel 4.19.83, there is a use-after-free (read…8.2
• CVE-2019-19771The lodahs package 0.0.1 for Node.js is a Trojan horse, and …8.8
• CVE-2019-19772Various Lexmark products have reflected XSS in the embedded …5.4