GSD-2022-1006937 net: do not sense pfmemalloc status in skb_append_pagefrags()

Not scored Published

A flaw in the Linux kernel network stack could allow remote attackers to cause a denial of service by triggering incorrect memory allocation status checks.

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

What is GSD-2022-1006937?

GSD-2022-1006937 is a denial of service vulnerability in Kernel, published on 14 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

net: do not sense pfmemalloc status in skb_append_pagefrags()

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 v5.15.77 by commit 92b4c5c3fa810212da20088bcc6c0a77fc8607bd, it was introduced in version v5.15.68 by commit 8527c9a6bf8e54fef0a8d3d7d8874a48c725c915. For more details please see the references link.

Which versions are affected by GSD-2022-1006937?

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

PackageAffectedFixed in
Kernel LinuxAll versionsNone

How do I fix GSD-2022-1006937?

No fix has been published for GSD-2022-1006937 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-2022-1006937 being exploited?

There is no known exploitation of GSD-2022-1006937 in the wild and no public exploit code.

Sources

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