rhsa-2021_2316
Vulnerability from csaf_redhat
Published
2021-06-08 22:44
Modified
2024-11-05 23:40
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: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362)
* kernel: Use after free via PI futex state (CVE-2021-3347)
* kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648)
* kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363)
* kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364)
* kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170)
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):
* lru-add-drain workqueue on RT is allocated without being used (BZ#1894587)
* kernel-rt: update to the latest RHEL7.9.z source tree (BZ#1953118)
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": "A use-after-free flaw was found in the Linux kernel console driver when using the copy-paste buffer. This flaw allows a local user to crash the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c",
"title": "Vulnerability summary"
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{
"category": "other",
"text": "The impact is moderate, because of the need of additional privileges (usually local console user).",
"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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"title": "Statement"
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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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{
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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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Loading...
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.