CVE-2024-43826

nfs: pass explicit offset/count to trace events

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: nfs: pass explicit offset/count to trace events nfs_folio_length is unsafe to use without having the folio locked and a
check for a NULL ->f_mapping that protects against truncations and can
lead to kernel crashes. E.g. when running xfstests generic/065 with
all nfs trace points enabled. Follow the model of the XFS trace points and pass in an explіcit offset
and length. This has the additional benefit that these values can
be more accurate as some of the users touch partial folio ranges.

In the Linux kernel, the following vulnerability has been resolved: nfs: pass explicit offset/count to trace events nfs_folio_length is unsafe to use without having the folio locked and a check for a NULL ->f_mapping that protects against truncations and can lead to kernel crashes. E.g. when running xfstests generic/065 with all nfs trace points enabled. Follow the model of the XFS trace points and pass in an explіcit offset and length. This has the additional benefit that these values can be more accurate as some of the users touch partial folio ranges.

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-08-17 CVE Reserved
2024-08-17 CVE Published
2024-12-19 CVE Updated
2025-03-23 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (5)

URL	Tag	Source
https://git.kernel.org/stable/c/eb5654b3b89d5e836312cea9f3fdb49457852e89	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/387e6e9d110250946df4d4ebef9c2def5c7a4722	2024-08-03
https://git.kernel.org/stable/c/fada32ed6dbc748f447c8d050a961b75d946055a	2024-07-17

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-43826	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2305484	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"				>= 6.3 < 6.10.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.3 < 6.10.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.3 < 6.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.3 < 6.11"		en		Affected