CVE-2024-49938: wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit
First published: Mon Oct 21 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | <5.10.227 | |
| Linux kernel | >=5.11<5.15.168 | |
| Linux kernel | >=5.16<6.1.113 | |
| Linux kernel | >=6.2<6.6.55 | |
| Linux kernel | >=6.7<6.10.14 | |
| Linux kernel | >=6.11<6.11.3 | |
| Linux Kernel | <5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b
- https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95
- https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4
- https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179
- https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f
- https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f
- https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77
- https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d
- https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49938
- https://nvd.nist.gov/vuln/detail/CVE-2024-49938
- https://launchpad.net/bugs/cve/CVE-2024-49938
- https://security-tracker.debian.org/tracker/CVE-2024-49938
- https://ubuntu.com/security/CVE-2024-49938
- https://git.kernel.org/linus/94745807f3ebd379f23865e6dab196f220664179
Frequently Asked Questions
What is the severity of CVE-2024-49938?
CVE-2024-49938 has been classified as having a moderate severity level in the Linux kernel.
What versions of the Linux kernel are affected by CVE-2024-49938?
CVE-2024-49938 affects Linux kernel versions prior to 5.10.227 and between 5.11 and 6.1.113, as well as other specific versions up to 6.11.
How do I fix CVE-2024-49938?
To fix CVE-2024-49938, update your Linux kernel to a version that is patched, such as 6.1.123-1 or 6.12.15-1.
What type of vulnerability is CVE-2024-49938?
CVE-2024-49938 is a vulnerability in the wifi driver related to incorrect handling of skb structure leading to potential memory corruption.
Is CVE-2024-49938 exploitable in the wild?
While there is no public proof of concept available, the nature of CVE-2024-49938 indicates that it could potentially be exploited under specific conditions.
- agent/title
- agent/type
- agent/first-publish-date
- agent/weakness
- agent/severity
- agent/remedy
- agent/references
- agent/author
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-api
- collector/launchpad-cve
- source/Launchpad
- agent/source
- agent/softwarecombine
- agent/description
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/event
- vendor/linux
- canonical/linux kernel
- version/linux kernel/5.11
- version/linux kernel/5.16
- version/linux kernel/6.2
- version/linux kernel/6.7
- version/linux kernel/6.11
- package-manager/debian