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CVE-2019-19319

Date: November 27, 2019

In the Linux kernel before 5.2, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call, aka CID-345c0dbf3a30.

Severity Score

Related Resources (15)

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19319
https://nvd.nist.gov/vuln/detail/CVE-2019-19319
https://security-tracker.debian.org/tracker/CVE-2019-19319
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://www.debian.org/security/2020/dsa-4698
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://bugzilla.suse.com/show_bug.cgi?id=1158021
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19319
https://usn.ubuntu.com/4391-1/
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://security.netapp.com/advisory/ntap-20200103-0001/
https://access.redhat.com/security/cve/CVE-2019-19319
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=345c0dbf3a30
https://www.mend.io/vulnerability-database/CVE-2019-19319

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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