SecuriTricks - CVE-2024-50260

Description

In the Linux kernel, the following vulnerability has been resolved: sock_map: fix a NULL pointer dereference in sock_map_link_update_prog() The following race condition could trigger a NULL pointer dereference: sock_map_link_detach(): sock_map_link_update_prog(): mutex_lock(&sockmap_mutex); ... sockmap_link->map = NULL; mutex_unlock(&sockmap_mutex); mutex_lock(&sockmap_mutex); ... sock_map_prog_link_lookup(sockmap_link->map); mutex_unlock(&sockmap_mutex); <continue> Fix it by adding a NULL pointer check. In this specific case, it makes no sense to update a link which is being released.

Product(s) Impacted

Vendor	Product	Versions
Linux	Linux Kernel	*, 6.12

Weaknesses

CWE-476

NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

*CPE(s)

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
o	linux	linux_kernel	/	/	/	/	/	/	/	/
o	linux	linux_kernel	6.12	rc1	/	/	/	/	/	/
o	linux	linux_kernel	6.12	rc2	/	/	/	/	/	/
o	linux	linux_kernel	6.12	rc3	/	/	/	/	/	/
o	linux	linux_kernel	6.12	rc4	/	/	/	/	/	/
o	linux	linux_kernel	6.12	rc5	/	/	/	/	/	/

References

https://git.kernel.org/stable/c/740be3b9a6d73336f8c7d540842d0831dc7a808b

https://git.kernel.org/stable/c/9afe35fdda16e09d5bd3c49a68ba8c680dd678bd

CVSS Score

4.7 / 10

CVSS Data

Attack Vector: LOCAL
Attack Complexity: HIGH
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH

View Vector String

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Date

Published: Nov. 9, 2024, 11:15 a.m.
Last Modified: Nov. 13, 2024, 6:47 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVE-2024-50260