CVE-2024-35857

icmp: prevent possible NULL dereferences from icmp_build_probe()

Severity Score

5.3

*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:

icmp: prevent possible NULL dereferences from icmp_build_probe()

First problem is a double call to __in_dev_get_rcu(), because
the second one could return NULL.

if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list)

Second problem is a read from dev->ip6_ptr with no NULL check:

if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list))

Use the correct RCU API to fix these.

v2: add missing include <net/addrconf.h>

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: icmp: evita posibles desreferencias a NULL por parte de icmp_build_probe(). El primer problema es una doble llamada a __in_dev_get_rcu(), porque la segunda podría devolver NULL. if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list) El segundo problema es una lectura de dev->ip6_ptr sin verificación NULL: if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list)) Use el correcto API de RCU para solucionarlos. v2: agregar falta incluir

A flaw was found in the Linux kernel's ICMP protocol. Under some conditions, a NULL pointer dereference can be triggered due to a missing check, causing a system crash and resulting in a denial of service.

*Credits: N/A

CVSS Scores

CISAv3.1 5.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-17 CVE Reserved
2024-05-17 CVE Published
2024-05-18 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (8)

URL	Tag	Source
https://git.kernel.org/stable/c/d329ea5bd8845f0b196bf41b18b6173340d6e0e4	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/23b7ee4a8d559bf38eac7ce5bb2f6ebf76f9c401	2024-05-02
https://git.kernel.org/stable/c/599c9ad5e1d43f5c12d869f5fd406ba5d8c55270	2024-05-02
https://git.kernel.org/stable/c/d68dc711d84fdcf698e5d45308c3ddeede586350	2024-05-02
https://git.kernel.org/stable/c/3e2979bf080c40da4f7c93aff8575ab8bc62b767	2024-05-02
https://git.kernel.org/stable/c/c58e88d49097bd12dfcfef4f075b43f5d5830941	2024-04-22

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-35857	2024-07-31
https://bugzilla.redhat.com/show_bug.cgi?id=2281247	2024-07-31

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"				>= 5.13 < 5.15.158 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.15.158"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.13 < 6.1.90 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.1.90"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.13 < 6.6.30 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.6.30"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.13 < 6.8.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.8.9"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.13 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.9"		en		Affected