CVE-2023-28772

kernel: lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow

Severity Score

6.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

NVD
RedHat

An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow.

A buffer overflow write flaw was identified in seq_buf_putmem_hex in lib/seq_buf.c in seq_buf in the Linux Kernel. This issue may allow a user with special debug privileges such as ftrace or root to cause an overflow in the destination buffer due to a missing sanity check.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Multiple

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-03-23 CVE Reserved
2023-03-23 CVE Published
2023-05-11 First Exploit
2024-06-27 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (10)

URL	Tag	Source
https://lkml.kernel.org/r/20210626032156.47889-1-yun.zhou%40windriver.com
https://lore.kernel.org/lkml/20210625122453.5e2fe304%40oasis.local.home
https://security.netapp.com/advisory/ntap-20230427-0005	Third Party Advisory

URL	Date	SRC
https://github.com/Trinadh465/linux-4.1.15_CVE-2023-28772	2023-05-11
https://github.com/Satheesh575555/linux-4.1.15_CVE-2023-28772	2023-05-11
https://github.com/hshivhare67/kernel_v4.1.15_CVE-2023-28772	2023-05-12

URL	Date	SRC
https://github.com/torvalds/linux/commit/d3b16034a24a112bb83aeb669ac5b9b01f744bb7	2023-11-07

URL	Date	SRC
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3	2023-11-07
https://access.redhat.com/security/cve/CVE-2023-28772	2024-03-19
https://bugzilla.redhat.com/show_bug.cgi?id=2181330	2024-03-19

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"				>= 2.6.27 < 4.4.276 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.27 < 4.4.276"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.276 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.276"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.14.240 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.240"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.198 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.198"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.133 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.133"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.10.51 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.51"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.11 < 5.12.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.12.18"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.13 < 5.13.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.13.3"		-		Affected