CVE-2026-46152: Linux kernel · wifi: mac80211: drop stray 'static' from fast-RX rx_result
Affects Linux kernelSource CVE Database V5
Not known to be exploited · CVSS 8.8 High · fixed in e131562d6f2b958148c35c98831b007f47f0e3d3 : patch Linux kernel soon.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-10-16.
- Patch
- Available – fixed in e131562d6f2b958148c35c98831b007f47f0e3d3, 03584528bfffb195e384698af9148b94e42e3f14, 1739fc31b4de06c5c78ce0741182770fb079091e +2
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: drop stray 'static' from fast-RX rx_result ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but its per-invocation rx_result is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211_rx_mesh_data() and the switch on res. That can make a packet that was queued or consumed by ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make a packet that should continue return as queued. Make res an automatic variable so each invocation keeps its own result.
References
- git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14 (opens in a new tab)
- git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e (opens in a new tab)
- git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3 (opens in a new tab)
- git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893 (opens in a new tab)
- git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-46152 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482563 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46152.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:44694 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:27288 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:36767 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:38902 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:27789 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:26427 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:26428 (opens in a new tab)