rhsa-2021_0774
Vulnerability from csaf_redhat
Published
2021-03-09 10:24
Modified
2024-11-22 14:38
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 8.2 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: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444) * kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) * kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) * kernel: performance counters race condition use-after-free (CVE-2020-14351) * kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) 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.z7 Batch source tree (BZ#1915947) * kernel-rt possible livelock: WARNING: CPU: 28 PID: 3109 at kernel/ptrace.c:242 ptrace_check_attach+0xdd/0x1a0 (BZ#1925309)
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.



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        "text": "An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.\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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        "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: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444)\n\n* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)\n\n* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)\n\n* kernel: performance counters race condition use-after-free (CVE-2020-14351)\n\n* kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)\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* kernel-rt: update RT source tree to the latest RHEL-8.2.z7 Batch source tree (BZ#1915947)\n\n* kernel-rt possible livelock: WARNING: CPU: 28 PID: 3109 at kernel/ptrace.c:242 ptrace_check_attach+0xdd/0x1a0 (BZ#1925309)",
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          "title": "Vulnerability summary"
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          "title": "Vulnerability description"
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        {
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          "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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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-29661"
        },
        {
          "category": "external",
          "summary": "RHBZ#1906525",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1906525"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-29661",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-29661"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-29661",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-29661"
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      "release_date": "2020-12-04T00:00:00+00:00",
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      "title": "kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.