csaf_redhat - rhsa-2021

rhsa-2021_3440

Vulnerability from csaf_redhat

Published

2021-09-07 14:48

Modified

2024-11-15 10:36

Summary

Red Hat Security Advisory: kernel-rt security and bug fix update

Notes

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * OSLAT spikes on subset of cpus (BZ#1986063) * kernel-rt: update RT source tree to the RHEL-8.4.z source tree (BZ#1990013) * Failure to enter full_nohz due to needless SCHED softirqs (BZ#1990272) * kernel-rt: Make rcu_normal_after_boot writable (BZ#1995431)

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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        "text": "An update for kernel-rt is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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        "text": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* OSLAT spikes on subset of cpus (BZ#1986063)\n\n* kernel-rt: update RT source tree to the RHEL-8.4.z source tree (BZ#1990013)\n\n* Failure to enter full_nohz due to needless SCHED softirqs (BZ#1990272)\n\n* kernel-rt: Make rcu_normal_after_boot writable (BZ#1995431)",
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}

cve-2021-38201

Vulnerability from cvelistv5

Published

2021-08-08 19:26

Modified

2024-08-04 01:37

Severity ?

Summary

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.

References

▼	URL	Tags
	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4	x_refsource_MISC
	https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8c	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210902-0010/	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted