CVE-2024-47713: wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop()
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop() Since '__dev_queue_xmit()' should be called with interrupts enabled, the following backtrace: ieee80211_do_stop() ... spin_lock_irqsave(&local->queue_stop_reason_lock, flags) ... ieee80211_free_txskb() ieee80211_report_used_skb() ieee80211_report_ack_skb() cfg80211_mgmt_tx_status_ext() nl80211_frame_tx_status() genlmsg_multicast_netns() genlmsg_multicast_netns_filtered() nlmsg_multicast_filtered() netlink_broadcast_filtered() do_one_broadcast() netlink_broadcast_deliver() __netlink_sendskb() netlink_deliver_tap() __netlink_deliver_tap_skb() dev_queue_xmit() __dev_queue_xmit() ; with IRQS disabled ... spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags) issues the warning (as reported by syzbot reproducer): WARNING: CPU: 2 PID: 5128 at kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120 Fix this by implementing a two-phase skb reclamation in 'ieee80211_do_stop()', where actual work is performed outside of a section with interrupts disabled.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.32<5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.54 | |
| Linux Kernel | >=6.7<6.10.13 | |
| Linux Kernel | >=6.11<6.11.2 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/04f75f5bae33349283d6886901d9acd2f110c024
- https://git.kernel.org/stable/c/058c9026ad79dc98572442fd4c7e9a36aba6f596
- https://git.kernel.org/stable/c/07eb0bd7b0a8abed9d45e0f567c9af1dc83e5268
- https://git.kernel.org/stable/c/9d301de12da6e1bb069a9835c38359b8e8135121
- https://git.kernel.org/stable/c/acb53a716e492a02479345157c43f21edc8bc64b
- https://git.kernel.org/stable/c/ad4b7068b101fbbb4a9ca4b99b25eb051a9482ec
- https://git.kernel.org/stable/c/db5ca4b42ccfa42d2af7b335ff12578e57775c02
- https://git.kernel.org/stable/c/eab272972cffff9cd973b8e4055a8e81c64f7e6a
- https://git.kernel.org/stable/c/f232916fab67ca1c3425926df4a866e59ff26908
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-47713
- https://nvd.nist.gov/vuln/detail/CVE-2024-47713
- https://launchpad.net/bugs/cve/CVE-2024-47713
- https://security-tracker.debian.org/tracker/CVE-2024-47713
- https://ubuntu.com/security/CVE-2024-47713
- https://git.kernel.org/linus/9d301de12da6e1bb069a9835c38359b8e8135121
Frequently Asked Questions
What is the severity of CVE-2024-47713?
The severity of CVE-2024-47713 is currently classified as high due to its potential impact on system stability and security.
How do I fix CVE-2024-47713?
To fix CVE-2024-47713, update to the latest stable version of the Linux kernel, specifically versions 6.1.123-1, 6.1.128-1, or higher.
Which versions of the Linux kernel are affected by CVE-2024-47713?
CVE-2024-47713 affects Linux kernel versions between 2.6.32 and 6.10.13, including specific ranges within those versions.
What components are impacted by CVE-2024-47713 in the Linux kernel?
CVE-2024-47713 specifically impacts the mac80211 component of the Linux kernel, which is related to Wi-Fi functionalities.
Is CVE-2024-47713 actively being exploited?
At this time, there is no public report indicating that CVE-2024-47713 is actively being exploited in the wild.
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