CVE-2024-49938

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-49938
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's a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b Patch
https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95 Patch
https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4 Patch
https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179 Patch
https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f Patch
https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f Patch
https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77 Patch
https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d Patch
https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

13 Nov 2024, 15:25

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b - () https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b - Patch
References () https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95 - () https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95 - Patch
References () https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4 - () https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4 - Patch
References () https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179 - () https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179 - Patch
References () https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f - () https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f - Patch
References () https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f - () https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f - Patch
References () https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77 - () https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77 - Patch
References () https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d - () https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d - Patch
References () https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb - () https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb - Patch
CWE CWE-824
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

08 Nov 2024, 16:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77 -
  • () https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb -

23 Oct 2024, 15:13

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: ath9k_htc: Use __skb_set_length() para restablecer urb antes de volver a enviar Syzbot señala que skb_trim() tiene una comprobación de cordura en la longitud existente del skb, que puede no inicializarse en algunas rutas de error. La intención aquí es claramente solo restablecer la longitud a cero antes de volver a enviar, así que cambie a llamar a __skb_set_length(skb, 0) directamente. Además, __skb_set_length() ya contiene una llamada a skb_reset_tail_pointer(), así que elimine la llamada redundante. El informe de syzbot vino de ath9k_hif_usb_reg_in_cb(), pero hay un uso similar de skb_trim() en ath9k_hif_usb_rx_cb(), cambie ambos mientras estamos en eso.

21 Oct 2024, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-10-21 18:15

Updated : 2024-11-13 15:25

NVD link : CVE-2024-49938

Mitre link : CVE-2024-49938

CVE.ORG link : CVE-2024-49938

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-824

Access of Uninitialized Pointer


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