CVE-2019-15919

kernel: use-after-free in SMB2_write function in fs/cifs/smb2pdu.c

Severity Score

3.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in the Linux kernel before 5.0.10. SMB2_write in fs/cifs/smb2pdu.c has a use-after-free.

Se detectó un problema en el kernel de Linux versiones anteriores a 5.0.10. La función SMB2_write en el archivo fs/cifs/smb2pdu.c presenta un uso de la memoria previamente liberada.

An flaw was discovered in the Linux kernel's CIFS client implementation. While issuing an SMB2_write, a value can be used after it was intended to be freed when CIFS function tracing is enabled. Even though the data is used after being freed, using it to for privilege escalation does not seem possible.

An update that solves 38 vulnerabilities and has 159 fixes is now available. The openSUSE Leap 15.0 kernel was updated to receive various security and bug fixes.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-09-04 CVE Reserved
2019-09-04 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (7)

URL	Tag	Source
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.10	Release Notes
https://security.netapp.com/advisory/ntap-20191004-0001	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/torvalds/linux/commit/6a3eb3360667170988f8a6477f6686242061488a	2019-12-11

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html	2019-12-11
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html	2019-12-11
https://access.redhat.com/security/cve/CVE-2019-15919	2019-11-05
https://bugzilla.redhat.com/show_bug.cgi?id=1750410	2019-11-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.0.10 Search vendor "Linux" for product "Linux Kernel" and version " < 5.0.10"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.0 Search vendor "Opensuse" for product "Leap" and version "15.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected