Vulnerability-Lookup

RHSA-2022:0078

Vulnerability from csaf_redhat - Published: 2022-01-11 16:03 - Updated: 2026-06-28 12:09

Summary

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

Severity

Moderate

Notes

Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations (CVE-2020-36322) 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): * kernel-rt: update RT source tree to the latest RHEL-8.2.z14 Batch source tree (BZ#2032551)

Terms of Use: 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.

CVE-2020-36322

A denial of service flaw was found in fuse_do_getattr in fs/fuse/dir.c in the kernel side of the FUSE filesystem in the Linux kernel. A local user could use this flaw to crash the system.

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-459 - Incomplete Cleanup

Affected products

Fixed 30 products

Product	Version	Remediation
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-0:4.18.0-193.71.1.rt13.121.el8_2.src	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-core-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-core-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-debuginfo-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-devel-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-kvm-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-modules-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debug-modules-extra-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debuginfo-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-devel-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-kvm-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-modules-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: NFV-8.2.0.Z.EUS:kernel-rt-modules-extra-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-0:4.18.0-193.71.1.rt13.121.el8_2.src	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-core-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-core-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-debuginfo-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-devel-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-modules-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debug-modules-extra-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debuginfo-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-devel-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-modules-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: RT-8.2.0.Z.EUS:kernel-rt-modules-extra-0:4.18.0-193.71.1.rt13.121.el8_2.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2022:0078	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1949560	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2020-36322	self
https://bugzilla.redhat.com/show_bug.cgi?id=1949560	external
https://www.cve.org/CVERecord?id=CVE-2020-36322	external
https://nvd.nist.gov/vuln/detail/CVE-2020-36322	external
https://git.kernel.org/pub/scm/linux/kernel/git/t…	external

JSON

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          "text": "A denial of service flaw was found in fuse_do_getattr in fs/fuse/dir.c in the kernel side of the FUSE filesystem in the Linux kernel. A local user could use this flaw to crash the system.",
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          "text": "kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations",
          "title": "Vulnerability summary"
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          "text": "This issue affected Linux kernel versions as shipped with Red Hat Enterprise Linux from 8.3 and prior the versions. RHEL 8.4 and later versions are not affected.",
          "title": "Statement"
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        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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}

CVE-2020-36322 (GCVE-0-2020-36322)

Vulnerability from cvelistv5 – Published: 2021-04-14 00:00 – Updated: 2024-08-04 17:23

Summary

An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as CVE-2021-28950.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2175 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/t…
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://www.debian.org/security/2022/dsa-5096	vendor-advisory
https://www.starwindsoftware.com/security/sw-2022…

Show details on NVD website

JSON

To clipboard

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          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-11T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d069dbe8aaf2a197142558b6fb2978189ba3454"
        },
        {
          "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.6"
        },
        {
          "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
        },
        {
          "name": "[debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
        },
        {
          "name": "DSA-5096",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5096"
        },
        {
          "url": "https://www.starwindsoftware.com/security/sw-20220816-0001/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-36322",
    "datePublished": "2021-04-14T00:00:00.000Z",
    "dateReserved": "2021-04-14T00:00:00.000Z",
    "dateUpdated": "2024-08-04T17:23:10.386Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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