Linux Kernel up to 5.4.1 fs/ext4/inode.c __ext4_expand_extra_isize/ext4_xattr_set_entry use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability was found in Linux Kernel up to 5.4.1 (Operating System). It has been declared as critical. This vulnerability affects the function __ext4_expand_extra_isize/ext4_xattr_set_entry of the file fs/ext4/inode.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented 12/12/2019. This vulnerability was named CVE-2019-19767 since 12/12/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 5.4.2 eliminates this vulnerability.

See 147151, 147150 and 147149 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.2
Patch: git.kernel.org

Timelineinfo

12/12/2019 🔍
12/12/2019 +0 days 🔍
12/13/2019 +1 days 🔍
03/11/2024 +1550 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a
Status: Not defined

CVE: CVE-2019-19767 (🔍)
See also: 🔍

Entryinfo

Created: 12/13/2019 09:08
Updated: 03/11/2024 14:40
Changes: 12/13/2019 09:08 (40), 12/13/2019 09:13 (18), 03/11/2024 14:38 (6), 03/11/2024 14:40 (1)
Complete: 🔍

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