CVE-2024-41077

null_blk: fix validation of block size

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

null_blk: fix validation of block size

Block size should be between 512 and PAGE_SIZE and be a power of 2. The current
check does not validate this, so update the check.

Without this patch, null_blk would Oops due to a null pointer deref when
loaded with bs=1536 [1].

[axboe: remove unnecessary braces and != 0 check]

*Credits: N/A

CVSS Scores

Red Hatv3.1 4.4

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-07-12 CVE Reserved
2024-07-29 CVE Published
2024-07-30 EPSS Updated
2024-11-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/9625afe1dd4a158a14bb50f81af9e2dac634c0b1	2024-07-27
https://git.kernel.org/stable/c/9b873bdaae64bddade9d8c6df23c8a31948d47d0	2024-07-27
https://git.kernel.org/stable/c/2772ed2fc075eef7df3789906fc9dae01e4e132e	2024-07-25
https://git.kernel.org/stable/c/08f03186b96e25e3154916a2e70732557c770ea7	2024-07-25
https://git.kernel.org/stable/c/f92409a9da02f27d05d713bff5f865e386cef9b3	2024-07-25
https://git.kernel.org/stable/c/c462ecd659b5fce731f1d592285832fd6ad54053	2024-06-05

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-41077	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2300454	2024-11-12

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"				< 5.10.223 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.223"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.164 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.164"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.101 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.101"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.42 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.42"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.9.11 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.10"		en		Affected