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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2	Release Notes Vendor Advisory
https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a	Patch Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=205609	Exploit Issue Tracking Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a	Patch Vendor Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=205707	Issue Tracking Vendor Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://usn.ubuntu.com/4258-1/
https://usn.ubuntu.com/4287-1/
https://usn.ubuntu.com/4287-2/
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://usn.ubuntu.com/4284-1/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2019-12-12 12:15

Updated : 2020-01-03 03:15

NVD link : CVE-2019-19767

Mitre link : CVE-2019-19767

JSON object : View

CWE

CWE-416

Use After Free

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Products Affected

linux

linux_kernel

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