csaf_redhat - rhsa-2022

rhsa-2022_0822

Vulnerability from csaf_redhat

Published

2022-03-10 15:35

Modified

2024-11-15 14:43

Summary

Red Hat Security Advisory: kernel-rt security update

Notes

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. 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: improper initialization of the "flags" member of the new pipe_buffer (CVE-2022-0847) 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.

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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}

cve-2022-0847

Vulnerability from cvelistv5

Published

2022-03-07 00:00

Modified

2024-08-02 23:40

Severity ?

Summary

A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2060795
	https://dirtypipe.cm4all.com/
	http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html
	http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html
	http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html
	https://www.suse.com/support/kb/doc/?id=000020603
	https://security.netapp.com/advisory/ntap-20220325-0005/
	https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015
	http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html

Impacted products

Vendor

Product

Version

▼

n/a

kernel

Version: Linux Kernel 5.17 rc6

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