CVE-2024-49938

Severity CVSS v4.0:

Pending analysis

Type:

CWE-824 Access of Uninitialized Pointer

Publication date:

21/10/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit Syzbot points out that skb_trim() has a sanity check on the existing length of the skb, which can be uninitialised in some error paths. The intent here is clearly just to reset the length to zero before resubmitting, so switch to calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length() already contains a call to skb_reset_tail_pointer(), so remove the redundant call. The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there&#39;s a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we&#39;re at it.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		5.10.227 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.168 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.113 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.55 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.10.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.11 (including)	6.11.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-49938

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools