csaf_redhat - rhsa-2022

rhsa-2022_0958

Vulnerability from csaf_redhat

Published

2022-03-17 16:30

Modified

2024-11-06 00:34

Summary

Red Hat Security Advisory: kpatch-patch-4_18_0-147_58_1 security and bug fix update

Notes

Topic

An update for kpatch-patch-4_18_0-147_58_1 is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. 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

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es): * kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920) * kernel: use-after-free in RDMA listen() (CVE-2021-4028) * kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083) * kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155) * kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330) * kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492) * kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942) 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): * Several kpatch CVEs needed for kernel-4.18.0-147.58.1.el8_1 (BZ#2064297)

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 kpatch-patch-4_18_0-147_58_1 is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.\n\nRed 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.",
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  "vulnerabilities": [
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      "cwe": {
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      "ids": [
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          "text": "2031930"
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      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in unix_dgram_recvmsg in net/unix/af_unix.c in the Linux kernel\u0027s garbage collection for Unix domain socket file handlers.  In this flaw, a missing cleanup may lead to a use-after-free due to a race problem. This flaw allows a local user to crash the system or escalate their privileges on the system.\r\n\r\nA read-after-free memory flaw was found in the Linux kernel\u0027s garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Use After Free in unix_gc() which could result in a local privilege escalation",
          "title": "Vulnerability summary"
        },
        {
          "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.",
          "title": "CVSS score applicability"
        }
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          "url": "https://access.redhat.com/security/cve/CVE-2021-0920"
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          "summary": "RHBZ#2031930",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2031930"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-0920",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-0920"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-0920",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0920"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cbcf01128d0a92e131bd09f1688fe032480b65ca",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cbcf01128d0a92e131bd09f1688fe032480b65ca"
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          "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
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      "release_date": "2021-07-28T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2022-03-17T16:30:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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      "remediations": [
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          "category": "vendor_fix",
          "date": "2022-03-17T16:30:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          },
          "url": "https://access.redhat.com/errata/RHSA-2022:0958"
        },
        {
          "category": "workaround",
          "details": "This issue can be mitigated by ensuring xfs_alloc_file_space is not called with \"0\" as an argument.\n\nThis can be done with a SystemTap script  (which resets \"0\" with  XFS_BMAPI_PREALLOC), below are the steps:\n\n1) Save the following script in a \u0027CVE-2021-4155.stp\u0027 file\n\n--- On Red Hat Enterprise Linux 6  ---\nprobe module(\"xfs\").function(\"xfs_alloc_file_space\") {\n\tif ($alloc_type == 0)\n\t\t$alloc_type = 0x40;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 6  ---\n\n--- On Red Hat Enterprise Linux 7 onwards ---\nprobe module(\"xfs\").function(\"xfs_alloc_file_space\") {\n\tif ($alloc_type == 0)\n\t\t$alloc_type = 0x8;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 7 onwards ---\n\n2) Install systemtap package and its dependencies\n\n     # yum install -y systemtap systemtap-runtime\n     # yum install -y kernel-devel kernel-debuginfo\n\n3) Build the mitigation kernel module as root.\n\n    # stap -r `uname -r` -m cve_2021_4155.ko -g CVE-2021-4155.stp -p4\n\n4) Load the mitigation module as root\n\n    # staprun -L cve_2021_4155.ko\n\n\n\nWhat is SystemTap and how to use it?\nhttps://access.redhat.com/solutions/5441",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL"
    },
    {
      "cve": "CVE-2022-0330",
      "cwe": {
        "id": "CWE-281",
        "name": "Improper Preservation of Permissions"
      },
      "discovery_date": "2022-01-19T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2042404"
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      "notes": [
        {
          "category": "description",
          "text": "A random memory access flaw was found in the Linux kernel\u2019s GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: possible privileges escalation due to missing TLB flush",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "For the Red Hat Enterprise Linux default configuration, the issue occurs only if a local user is running malicious code on GPU. The GPU is used and the user is required to have privileges to access the i915 Intel GPU.",
          "title": "Statement"
        },
        {
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-0330",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-0330"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-0330",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0330"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2022/01/25/12",
          "url": "https://www.openwall.com/lists/oss-security/2022/01/25/12"
        }
      ],
      "release_date": "2022-01-25T00:00:00+00:00",
      "remediations": [
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          "date": "2022-03-17T16:30:50+00:00",
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            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
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        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: possible privileges escalation due to missing TLB flush"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Yiqi Sun"
          ],
          "organization": "Nebula Lab"
        },
        {
          "names": [
            "Kevin Wang"
          ],
          "organization": "Huawei"
        }
      ],
      "cve": "CVE-2022-0492",
      "cwe": {
        "id": "CWE-862",
        "name": "Missing Authorization"
      },
      "discovery_date": "2022-02-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2051505"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in the Linux kernel\u2019s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.",
          "title": "Vulnerability description"
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          "text": "kernel: cgroups v1 release_agent feature may allow privilege escalation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "In the OpenShift Container Platform (OCP) the container escape and privilege escalation caused by the CVE-2022-0492 vulnerability are blocked by the SELinux policy enabled (by default) on the OCP cluster nodes.\n\nRed Hat Virtualization requires SELinux running in enforcing mode[1] on all hypervisors and managers, which blocks this vulnerability.\n\n1. https://access.redhat.com/solutions/499473",
          "title": "Statement"
        },
        {
          "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.",
          "title": "CVSS score applicability"
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          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af"
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        {
          "category": "impact",
          "details": "Important"
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      ],
      "title": "kernel: cgroups v1 release_agent feature may allow privilege escalation"
    },
    {
      "cve": "CVE-2022-22942",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2022-01-24T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2044809"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A use-after-free flaw was found in the Linux kernel\u2019s vmw_execbuf_copy_fence_user function in drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c in vmwgfx. This flaw allows a local attacker with user privileges to cause a privilege escalation problem.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: failing usercopy allows for use-after-free exploitation",
          "title": "Vulnerability summary"
        },
        {
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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          "BaseOS-8.1.0.Z.E4S:kpatch-patch-4_18_0-147_58_1-debugsource-0:1-1.el8_1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2022-22942"
        },
        {
          "category": "external",
          "summary": "RHBZ#2044809",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044809"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-22942",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-22942"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-22942",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-22942"
        }
      ],
      "release_date": "2022-01-27T20:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-03-17T16:30:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "BaseOS-8.1.0.Z.E4S:kpatch-patch-4_18_0-147_58_1-0:1-1.el8_1.ppc64le",
            "BaseOS-8.1.0.Z.E4S:kpatch-patch-4_18_0-147_58_1-0:1-1.el8_1.src",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2022:0958"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is to skip loading the affected module vmwgfx onto the system until we have a fix available. This can be done by a blacklist mechanism and ensures the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~",
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            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: failing usercopy allows for use-after-free exploitation"
    }
  ]
}

cve-2022-0492

Vulnerability from cvelistv5

Published

2022-03-03 00:00

Modified

2024-08-02 23:32

Severity ?

Summary

A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2051505
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
	https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html	mailing-list
	https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	mailing-list
	https://www.debian.org/security/2022/dsa-5095	vendor-advisory
	https://www.debian.org/security/2022/dsa-5096	vendor-advisory
	http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
	https://security.netapp.com/advisory/ntap-20220419-0002/
	http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
	http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

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cve-2022-22942

Vulnerability from cvelistv5

Published

2023-12-13 08:16

Modified

2024-08-03 03:28

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

The vmwgfx driver contains a local privilege escalation vulnerability that allows unprivileged users to gain access to files opened by other processes on the system through a dangling 'file' pointer.

References

▼	URL	Tags
	https://github.com/vmware/photon/wiki/Security-Update-3.0-356
	https://github.com/vmware/photon/wiki/Security-Update-4.0-148
	https://www.openwall.com/lists/oss-security/2022/01/27/4

Impacted products

▼	Vendor	Product
	n/a	Photon OS

Show details on NVD website

JSON

To clipboard

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cve-2021-0920

Vulnerability from cvelistv5

Published

2021-12-15 18:05

Modified

2024-08-03 15:55

Severity ?

Summary

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel

References

▼	URL	Tags
	https://source.android.com/security/bulletin/2021-11-01	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	mailing-list, x_refsource_MLIST

Impacted products

▼	Vendor	Product
	n/a	Android

Show details on NVD website

JSON

To clipboard

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cve-2021-4155

Vulnerability from cvelistv5

Published

2022-08-24 15:10

Modified

2024-08-03 17:16

Severity ?

Summary

A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.

References

▼	URL	Tags
	https://www.openwall.com/lists/oss-security/2022/01/10/1	x_refsource_MISC
	https://bugzilla.redhat.com/show_bug.cgi?id=2034813	x_refsource_MISC
	https://access.redhat.com/security/cve/CVE-2021-4155	x_refsource_MISC
	https://security-tracker.debian.org/tracker/CVE-2021-4155	x_refsource_MISC
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79	x_refsource_MISC

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

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cve-2022-0330

Vulnerability from cvelistv5

Published

2022-03-25 00:00

Modified

2024-08-02 23:25

Severity ?

Summary

A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2042404
	https://www.openwall.com/lists/oss-security/2022/01/25/12
	https://security.netapp.com/advisory/ntap-20220526-0001/
	http://www.openwall.com/lists/oss-security/2022/11/30/1	mailing-list

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

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cve-2021-4028

Vulnerability from cvelistv5

Published

2022-08-24 00:00

Modified

2024-08-03 17:16

Severity ?

Summary

A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.

References

▼	URL	Tags
	https://lkml.org/lkml/2021/10/4/697
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74
	https://bugzilla.redhat.com/show_bug.cgi?id=2027201
	https://access.redhat.com/security/cve/CVE-2021-4028
	https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0
	https://security.netapp.com/advisory/ntap-20221228-0002/

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

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cve-2021-4083

Vulnerability from cvelistv5

Published

2022-01-18 16:51

Modified

2024-08-03 17:16

Severity ?

Summary

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2029923	x_refsource_MISC
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2022/dsa-5096	vendor-advisory, x_refsource_DEBIAN
	https://www.oracle.com/security-alerts/cpujul2022.html	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20220217-0005/	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

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