RHSA-2023_7417
Vulnerability from csaf_redhat - Published: 2023-11-21 14:47 - Updated: 2024-11-15 17:36Summary
Red Hat Security Advisory: kpatch-patch security update
Severity
Important
Notes
Topic: An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.
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: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)
* kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
* kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
* kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
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.
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 use-after-free vulnerability was found in the traffic control index filter (tcindex) in the Linux kernel. The tcindex_delete does not properly deactivate filters, which can later lead to double freeing the structure. This flaw allows a local attacker to cause a use-after-free problem, leading to privilege escalation.
7.4 (High)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-0:1-3.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-0:1-3.el8_2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-0:1-3.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-debuginfo-0:1-3.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-debuginfo-0:1-3.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-debugsource-0:1-3.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_109_1-debugsource-0:1-3.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-0:1-2.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-0:1-2.el8_2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-0:1-2.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-debuginfo-0:1-2.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-debuginfo-0:1-2.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-debugsource-0:1-2.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_113_1-debugsource-0:1-2.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-0:1-1.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-0:1-1.el8_2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-0:1-1.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-debuginfo-0:1-1.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-debuginfo-0:1-1.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-debugsource-0:1-1.el8_2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.E4S:kpatch-patch-4_18_0-193_116_1-debugsource-0:1-1.el8_2.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A double-free flaw was found in u32_set_parms in net/sched/cls_u32.c in the Network Scheduler component in the Linux kernel. This flaw allows a local attacker to use a failure event to mishandle the reference counter, leading to a local privilege escalation threat.
7.0 (High)
Affected products
Fixed
21 products, the same list as for
CVE-2023-1829
Threats
Impact
Important
A use-after-free vulnerability was found in fw_set_parms in net/sched/cls_fw.c in network scheduler sub-component in the Linux Kernel. This issue occurs due to a missing sanity check during cleanup at the time of failure, leading to a misleading reference. This may allow a local attacker to gain local privilege escalation.
7.0 (High)
Affected products
Fixed
21 products, the same list as for
CVE-2023-1829
Threats
Impact
Important
A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.
7.8 (High)
Affected products
Fixed
21 products, the same list as for
CVE-2023-1829
Threats
Impact
Important
References
27 references
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"text": "For Red Hat Enterprise Linux 7, please use the mitigation to disable module cls_tcindex, because similar use-after-free issues also exists in the Linux Kernel\u0027s traffic control index filter and will not be fixed before Red Hat Enterprise Linux 8.",
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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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"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": "external",
"summary": "https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230719190824.21196-1-fw@strlen.de/",
"url": "https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230719190824.21196-1-fw@strlen.de/"
}
],
"release_date": "2023-07-19T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2023-11-21T14:47:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2023:7417"
},
{
"category": "workaround",
"details": "This flaw can be mitigated by preventing the affected netfilter kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.",
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"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()"
}
]
}
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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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