rhsa-2020_5441
Vulnerability from csaf_redhat
Published
2020-12-15 14:59
Modified
2024-11-15 08:40
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: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385) * kernel: The flow_dissector feature allows device tracking (CVE-2019-18282) * kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769) * kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314) * kernel: umask not applied on filesystem without ACL support (CVE-2020-24394) * kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212) * kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643) 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.z2 source tree (BZ#1873318) * deadlock between handle_mm_fault() and ptep_clear_flush() (BZ#1888872)
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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          "category": "description",
          "text": "A device tracking vulnerability was found in the flow_dissector feature in the Linux kernel. This flaw occurs because the auto flowlabel of the UDP IPv6 packet relies on a 32-bit hashmd value as a secret, and jhash (instead of siphash) is used. The hashmd value remains the same starting from boot time and can be inferred by an attacker.",
          "title": "Vulnerability description"
        },
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          "text": "kernel: The flow_dissector feature allows device tracking",
          "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.",
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          "title": "Vulnerability description"
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          "title": "Vulnerability description"
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          "text": "kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow",
          "title": "Vulnerability summary"
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      "title": "kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow"
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}


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