csaf_redhat - rhsa-2023

rhsa-2023_1092

Vulnerability from csaf_redhat

Published

2023-03-07 09:58

Modified

2024-09-13 21:08

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 7. 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: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378) * kernel: use-after-free related to leaf anon_vma double reuse (CVE-2022-42703) 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 to the latest RHEL7.9.z21 source tree (BZ#2159523)

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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          "title": "Vulnerability description"
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          "text": "kernel: stack overflow in do_proc_dointvec and proc_skip_spaces",
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          "text": "To trigger this issue, the user needs some privileges (for example, access to the sysctl files), but usually less than root or CAP_NET_ADMIN.",
          "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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          "text": "A memory leak flaw with use-after-free capability was found in the Linux kernel. The VMA mm/rmap.c functionality in the is_mergeable_anon_vma() function continuously forks, using memory operations to trigger an incorrect reuse of leaf anon_vma. This issue allows a local attacker to crash the system.",
          "title": "Vulnerability description"
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          "text": "kernel: use-after-free related to leaf anon_vma double reuse",
          "title": "Vulnerability summary"
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          "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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            "7Server-RT-7.9.Z:kernel-rt-trace-0:3.10.0-1160.88.1.rt56.1233.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-debuginfo-0:3.10.0-1160.88.1.rt56.1233.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-devel-0:3.10.0-1160.88.1.rt56.1233.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-kvm-0:3.10.0-1160.88.1.rt56.1233.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-kvm-debuginfo-0:3.10.0-1160.88.1.rt56.1233.el7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: use-after-free related to leaf anon_vma double reuse"
    }
  ]
}

cve-2022-42703

Vulnerability from cvelistv5

Published

2022-10-09 00:00

Modified

2024-08-03 13:10

Severity

Summary

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

References

URL	Tags
https://bugs.chromium.org/p/project-zero/issues/detail?id=2351
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7
https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b
https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html

Impacted products

Vendor	Product
n/a	n/a

Show details on NVD website

JSON

To clipboard

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cve-2022-4378

Vulnerability from cvelistv5

Published

2023-01-05 00:00

Modified

2024-08-03 01:41

Severity

Summary

A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.

References

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2152548
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
https://seclists.org/oss-sec/2022/q4/178
http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html

Impacted products

Vendor	Product
n/a	kernel

Show details on NVD website

JSON

To clipboard

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Action not permitted

rhsa-2023_1092

Vulnerability from csaf_redhat

cve-2022-42703

Vulnerability from cvelistv5

cve-2022-4378

Vulnerability from cvelistv5

Tags