Bug 2048359 (CVE-2021-4218) - CVE-2021-4218 kernel: sysctl parameter read causes kernel panic ( rpcrdma module )
Summary: CVE-2021-4218 kernel: sysctl parameter read causes kernel panic ( rpcrdma mod...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-4218
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Whiteboard:
Depends On:
Blocks: 2044566
TreeView+ depends on / blocked
 
Reported: 2022-01-31 04:32 UTC by Wade Mealing
Modified: 2022-02-01 14:12 UTC (History)
23 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux kernel’s implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots.
Clone Of:
Environment:
Last Closed: 2022-02-01 04:01:01 UTC
Embargoed:

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Description Wade Mealing 2022-01-31 04:32:55 UTC 
A flaw was found in the Linux kernels implementation of reading SVC RDMA counters.  Reading the counter sysctl panics the system.  This allows a local attacker with local access ot be able to create a denial of service while the system reboots.
Comment 3 Wade Mealing 2022-02-01 05:45:02 UTC 
Looks like centos stream caught this before it shipped in RHEL.

Centos Bug: https://bugs.centos.org/view.php?id=18395
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