CVE-2021-47252

Summary

In the Linux kernel, the following vulnerability has been resolved:

batman-adv: Avoid WARN_ON timing related checks

The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker.

But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 45011f2973f6b52cf50db397bb27bf805f5f0e7faffected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 6031daaaf6d5c359c99dfffa102e332df234ff09affected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 77a99aad5bc3ea105806ebae6be3cbadc2fc615eaffected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < e8e9d2968a9d08bf5c683afca182f1537edebf8daffected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4affected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 282baa8104af44e04c4af3e7f933b44267c7f86faffected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 2eb4e0b3631832a4291c8bf4c9db873f60b128c8affected
LinuxLinuxef0a937f7a1450d3a133ccd83c9c7d07587e7a00 < 9f460ae31c4435fd022c443a6029352217a16ac1affected
LinuxLinux3.14affected
LinuxLinux0 < 3.14unaffected
LinuxLinux4.4.293 <= 4.4.*unaffected
LinuxLinux4.9.274 <= 4.9.*unaffected
LinuxLinux4.14.238 <= 4.14.*unaffected
LinuxLinux4.19.196 <= 4.19.*unaffected
LinuxLinux5.4.128 <= 5.4.*unaffected
LinuxLinux5.10.46 <= 5.10.*unaffected
LinuxLinux5.12.13 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References