CVE-2021-38201

moderate-risk

Published 2021-08-08

net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.

Do I need to act?

1.3% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (5)

Linux Kernel

Hci Bootstrap Os

Hci Management Node

Solidfire

Element Software

Affected Vendors

Linux Netapp

References (6)

Mailing List https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4

Patch https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8...

Third Party Advisory https://security.netapp.com/advisory/ntap-20210902-0010/

Mailing List https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4

Patch https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8...

Third Party Advisory https://security.netapp.com/advisory/ntap-20210902-0010/

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 4/34 · Minimal

Exposure 12/34 · Low