RHSA-2022:8768
Vulnerability from csaf_redhat - Published: 2022-12-02 19:35 - Updated: 2026-02-18 16:27Summary
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 8.4 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: 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: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
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.
An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.
7.8 (High)
Affected products
Fixed
35 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-0:1-4.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-0:1-4.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-0:1-4.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-debuginfo-0:1-4.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-debuginfo-0:1-4.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-debugsource-0:1-4.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_49_1-debugsource-0:1-4.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-0:1-3.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-debuginfo-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-debuginfo-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-debugsource-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_57_1-debugsource-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-0:1-3.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-debuginfo-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-debuginfo-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-debugsource-0:1-3.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_62_1-debugsource-0:1-3.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-0:1-2.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-0:1-2.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-0:1-2.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-debuginfo-0:1-2.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-debuginfo-0:1-2.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-debugsource-0:1-2.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_65_1-debugsource-0:1-2.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-0:1-1.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-0:1-1.el8_4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-0:1-1.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-debuginfo-0:1-1.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-debuginfo-0:1-1.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-debugsource-0:1-1.el8_4.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_71_1-debugsource-0:1-1.el8_4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
8 references
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"scores": [
{
"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: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()"
}
]
}
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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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