wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop()
Published Oct 21, 2024
5.5
MEDIUMCVSS 3.1
EPSS 0.26%
Description
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.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 2.6.32StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<2.6.32
- Version 4.19.323StatusunaffectedConstraints<=4.19.*
- Version 5.10.227StatusunaffectedConstraints<=5.10.*
- Version 5.15.168StatusunaffectedConstraints<=5.15.*
- Version 5.4.285StatusunaffectedConstraints<=5.4.*
- Version 6.1.113StatusunaffectedConstraints<=6.1.*
- Version 6.10.13StatusunaffectedConstraints<=6.10.*
- Version 6.11.2StatusunaffectedConstraints<=6.11.*
- Version 6.12StatusunaffectedConstraints<=*
- Version 6.6.54StatusunaffectedConstraints<=6.6.*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 2.6.32 · < 5.10.227
- ≥ 5.11 · < 5.15.168
- ≥ 5.16 · < 6.1.113
- ≥ 6.2 · < 6.6.54
- ≥ 6.7 · < 6.10.13
- ≥ 6.11 · < 6.11.2
No data.
Red Hat Enterprise Linux 9
kernel-0:5.14.0-570.12.1.el9_6
Fixed · RHSA-2025:6966
Red Hat Enterprise Linux 9
kernel-0:5.14.0-570.12.1.el9_6
Fixed · RHSA-2025:6966
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel-rt
Out of support scope
Red Hat Enterprise Linux 8
kernel
Will not fix
Red Hat Enterprise Linux 8
kernel-rt
Will not fix
Red Hat Enterprise Linux 9
kernel-rt
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-570.12.1.el9_6 | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-570.12.1.el9_6 | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Will not fix | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
If WiFi functionality is not required, the `mac80211` kernel module can be blacklisted to prevent it from loading. Create a file `/etc/modprobe.d/blacklist-mac80211.conf` with the content `blacklist mac80211`. A system reboot is required for this change to take effect. Disabling this module will prevent all WiFi operations on the system.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 21, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.26% (0.00258) | 15.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.26% (0.00258) | 16.90th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00037) | 7.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Oct 22, 2024 | 0.04% (0.00044) | 11.06th | v3 (v2023.03.01) |
References (18)
- https://access.redhat.com/security/cve/CVE-2024-47713 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2320242 Issue Tracking
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://git.kernel.org/stable/c/04f75f5bae33349283d6886901d9acd2f110c024
- https://git.kernel.org/stable/c/058c9026ad79dc98572442fd4c7e9a36aba6f596 Patch
- https://git.kernel.org/stable/c/07eb0bd7b0a8abed9d45e0f567c9af1dc83e5268
- https://git.kernel.org/stable/c/9d301de12da6e1bb069a9835c38359b8e8135121 Patch
- https://git.kernel.org/stable/c/acb53a716e492a02479345157c43f21edc8bc64b Patch
- https://git.kernel.org/stable/c/ad4b7068b101fbbb4a9ca4b99b25eb051a9482ec Patch
- https://git.kernel.org/stable/c/db5ca4b42ccfa42d2af7b335ff12578e57775c02 Patch
- https://git.kernel.org/stable/c/eab272972cffff9cd973b8e4055a8e81c64f7e6a Patch
- https://git.kernel.org/stable/c/f232916fab67ca1c3425926df4a866e59ff26908 Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://lore.kernel.org/linux-cve-announce/2024102119-CVE-2024-47713-2624@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2024-47713
- https://www.cve.org/CVERecord?id=CVE-2024-47713
Change history (0)
No recorded changes yet.