GSD-2021-1001026 bcache: avoid oversized read request in cache missing code path

Not scored Published

A flaw in the Linux kernel bcache subsystem could allow oversized read requests, potentially leading to a denial of service.

Exploited in the wild
Not known
Login needed
Not stated
Attackable
Not stated
Victim action needed
Not stated
Fix
None listed

What is GSD-2021-1001026?

GSD-2021-1001026 is a denial of service vulnerability in Kernel, published on 30 Jun 2021.

Official description

bcache: avoid oversized read request in cache missing code path

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.11 by commit 555002a840ab88468e252b0eedf0b05e2ce7099c. For more details please see the references link.

Which versions are affected by GSD-2021-1001026?

1 open source package ship an affected version, including Kernel.

PackageAffectedFixed in
Kernel LinuxAll versionsNone

How do I fix GSD-2021-1001026?

No fix has been published for GSD-2021-1001026 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is GSD-2021-1001026 being exploited?

There is no known exploitation of GSD-2021-1001026 in the wild and no public exploit code.

Sources

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