AZL-51156
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-51156.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-51156
- Upstream
- Published
- 2024-10-21T12:15:07Z
- Modified
- 2026-04-01T05:17:40.796725Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-47713 affecting package kernel for versions less than 5.15.173.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: use two-phase skb reclamation in ieee80211dostop()
Since '__devqueuexmit()' should be called with interrupts enabled, the following backtrace:
ieee80211dostop() ... spinlockirqsave(&local->queuestopreasonlock, flags) ... ieee80211freetxskb() ieee80211reportusedskb() ieee80211reportackskb() cfg80211mgmttxstatusext() nl80211frametxstatus() genlmsgmulticastnetns() genlmsgmulticastnetnsfiltered() nlmsgmulticastfiltered() netlinkbroadcastfiltered() doonebroadcast() netlinkbroadcast_deliver() __netlinksendskb() netlinkdeliver_tap() __netlinkdelivertapskb() devqueue_xmit() _devqueuexmit() ; with IRQS disabled ... spinunlockirqrestore(&local->queuestopreasonlock, flags)
issues the warning (as reported by syzbot reproducer):
WARNING: CPU: 2 PID: 5128 at kernel/softirq.c:362 _localbhenableip+0xc3/0x120
Fix this by implementing a two-phase skb reclamation in 'ieee80211dostop()', where actual work is performed outside of a section with interrupts disabled.
- References