Vulnerability Details : CVE-2021-47252
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.
Products affected by CVE-2021-47252
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47252
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 10 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47252
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2025-04-30 |
References for CVE-2021-47252
-
https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8
batman-adv: Avoid WARN_ON timing related checks - kernel/git/stable/linux.git - Linux kernel stable treePatch
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