CVE-2026-74650: Linux kernel · staging: rtl8723bs: fix OOB read in WMM_param_handler()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:55 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- 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
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-06.
- Patch
- Available – fixed in e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4, e5b7610008f4e6a80c8b071aa77ddbd5e17ea472, ce2399717de242344880044b91a20a712644fdfb +5
Exploitation evidence
Disclosed: evidence found.
CVE published 22 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 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
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version that includes the patch identified by the listed commit hashes. No additional mitigation steps are required once the patch is applied.
Description
A vulnerability in the Linux kernel's rtl8723bs staging driver allows an out-of-bounds read in the WMM_param_handler() function. This occurs because the function copies a fixed-size WMM parameter element without validating the length of the received information element, leading to memory reads beyond the element's boundary when processing short WMM IEs. The flaw is reachable remotely via association response frames from an access point. The issue has been fixed by adding proper length validation within the handler.
References
- git.kernel.org/stable/c/5df2fd06567df5f178c8faae0bdaefd203618d21 (opens in a new tab)
- git.kernel.org/stable/c/6cdca4c8b64c15a3ab9ad7a85f482e9519eadf93 (opens in a new tab)
- git.kernel.org/stable/c/2bee6f7a0f0125238951e31da2e96d06fe359043 (opens in a new tab)
- git.kernel.org/stable/c/1158b9931207392d6dd136aa0c4be18893b50fa1 (opens in a new tab)
- git.kernel.org/stable/c/ce2399717de242344880044b91a20a712644fdfb (opens in a new tab)
- git.kernel.org/stable/c/e5b7610008f4e6a80c8b071aa77ddbd5e17ea472 (opens in a new tab)
- git.kernel.org/stable/c/e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4 (opens in a new tab)
- git.kernel.org/stable/c/ae21407350151bddfd4fea7aa39bd0643c0ca9d3 (opens in a new tab)