Ubuntu: (CVE-2021-47252): linux vulnerability

Ubuntu: (CVE-2021-47252): linux vulnerability

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

05/21/2024

Created

11/21/2024

Added

11/19/2024

Modified

02/11/2025

Description

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.

Solution(s)

• ubuntu-upgrade-linux
• ubuntu-upgrade-linux-aws
• ubuntu-upgrade-linux-aws-5-4
• ubuntu-upgrade-linux-aws-fips
• ubuntu-upgrade-linux-aws-hwe
• ubuntu-upgrade-linux-azure
• ubuntu-upgrade-linux-azure-4-15
• ubuntu-upgrade-linux-azure-5-4
• ubuntu-upgrade-linux-azure-fips
• ubuntu-upgrade-linux-bluefield
• ubuntu-upgrade-linux-fips
• ubuntu-upgrade-linux-gcp
• ubuntu-upgrade-linux-gcp-4-15
• ubuntu-upgrade-linux-gcp-5-4
• ubuntu-upgrade-linux-gcp-fips
• ubuntu-upgrade-linux-gkeop
• ubuntu-upgrade-linux-hwe
• ubuntu-upgrade-linux-hwe-5-4
• ubuntu-upgrade-linux-kvm
• ubuntu-upgrade-linux-oracle
• ubuntu-upgrade-linux-oracle-5-4
• ubuntu-upgrade-linux-raspi
• ubuntu-upgrade-linux-raspi-5-4

References

• https://attackerkb.com/topics/cve-2021-47252
• CVE - 2021-47252
• https://git.kernel.org/linus/9f460ae31c4435fd022c443a6029352217a16ac1
• https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f
• https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8
• https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f
• https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09
• https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e
• https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1
• https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4
• https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d
• https://www.cve.org/CVERecord?id=CVE-2021-47252

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