RHSA-2023_1469
Vulnerability from csaf_redhat - Published: 2023-03-27 08:13 - Updated: 2024-11-15 13:26Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Severity
Important
Notes
Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 9.
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: tun: avoid double free in tun_free_netdev (CVE-2022-4744)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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-9.1.z3 Batch (BZ#2170460)
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.
A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action "mirred") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.
5.5 (Medium)
Affected products
Fixed
32 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-0:5.14.0-162.22.2.rt21.186.el9_1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-core-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-core-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-debuginfo-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-devel-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-kvm-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-modules-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debug-modules-extra-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debuginfo-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-debuginfo-common-x86_64-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-devel-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-kvm-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-modules-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-9.1.0.Z.MAIN:kernel-rt-modules-extra-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-0:5.14.0-162.22.2.rt21.186.el9_1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-core-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-core-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-debuginfo-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-devel-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-kvm-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-modules-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debug-modules-extra-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debuginfo-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-debuginfo-common-x86_64-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-devel-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-kvm-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-modules-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-9.1.0.Z.MAIN:kernel-rt-modules-extra-0:5.14.0-162.22.2.rt21.186.el9_1.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.
7.8 (High)
Affected products
Fixed
32 products, the same list as for
CVE-2022-4269
Threats
Impact
Important
A use-after-free flaw was found in snd_ctl_elem_read in sound/core/control.c in Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. In this flaw a normal privileged, local attacker may impact the system due to a locking issue in the compat path, leading to a kernel information leak problem.
7.8 (High)
Affected products
Fixed
32 products, the same list as for
CVE-2022-4269
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
21 references
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"text": "A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action \"mirred\") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.",
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"text": "kernel: net: CPU soft lockup in TC mirred egress-to-ingress action",
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"text": "Red Hat Enterprise Linux 6 is not affected by this flaw as it did not include upstream commit 53592b3 (\"net/sched: act_mirred: Implement ingress actions\").",
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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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"url": "https://access.redhat.com/errata/RHSA-2023:1469"
},
{
"category": "workaround",
"details": "To mitigate this issue, skip loading (blacklist) the affected soundcard using modules like:\n\nblacklist soundcore\nblacklist snd\nblacklist snd_pcm\nblacklist snd_hda_codec_hdmi\nblacklist snd_hda_codec_realtek\nblacklist snd_hda_codec_generic\nblacklist snd_hda_intel\nblacklist snd_hda_codec\nblacklist snd_hda_core\nblacklist snd_hwdep\nblacklist snd_timer\n \nonto the system till we have a fix available. \n\nThis can be done by a blacklist mechanism, this will ensure 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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}
Loading…
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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