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Vulnerability Details :

CVE-2023-42755

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-05 Oct, 2023 | 18:25
Updated At-23 Jul, 2025 | 18:38
Rejected At-
Credits

Kernel: rsvp: out-of-bounds read in rsvp_classify()

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:05 Oct, 2023 | 18:25
Updated At:23 Jul, 2025 | 18:38
Rejected At:
▼CVE Numbering Authority (CNA)
Kernel: rsvp: out-of-bounds read in rsvp_classify()

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel-rt
CPEs
  • cpe:/a:redhat:enterprise_linux:8::nfv
  • cpe:/a:redhat:enterprise_linux:8::realtime
Default Status
affected
Versions
Unaffected
  • From 0:4.18.0-553.rt7.342.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel
CPEs
  • cpe:/o:redhat:enterprise_linux:8::baseos
  • cpe:/a:redhat:enterprise_linux:8::crb
Default Status
affected
Versions
Unaffected
  • From 0:4.18.0-553.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel-rt
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel
CPEs
  • cpe:/o:redhat:enterprise_linux:9
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
kernel-rt
CPEs
  • cpe:/o:redhat:enterprise_linux:9
Default Status
unaffected
Problem Types
TypeCWE IDDescription
CWECWE-125Out-of-bounds Read
Type: CWE
CWE ID: CWE-125
Description: Out-of-bounds Read
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

This flaw can be mitigated by preventing the affected `cls_rsvp` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.

Exploits

Credits

Timeline
EventDate
Reported to Red Hat.2023-09-20 00:00:00
Made public.2023-09-25 00:00:00
Event: Reported to Red Hat.
Date: 2023-09-20 00:00:00
Event: Made public.
Date: 2023-09-25 00:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/errata/RHSA-2024:2950
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3138
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-42755
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2239847
issue-tracking
x_refsource_REDHAT
https://seclists.org/oss-sec/2023/q3/229
N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2024:2950
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2024:3138
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2023-42755
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2239847
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://seclists.org/oss-sec/2023/q3/229
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/errata/RHSA-2024:2950
vendor-advisory
x_refsource_REDHAT
x_transferred
https://access.redhat.com/errata/RHSA-2024:3138
vendor-advisory
x_refsource_REDHAT
x_transferred
https://access.redhat.com/security/cve/CVE-2023-42755
vdb-entry
x_refsource_REDHAT
x_transferred
https://bugzilla.redhat.com/show_bug.cgi?id=2239847
issue-tracking
x_refsource_REDHAT
x_transferred
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
x_transferred
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
x_transferred
https://seclists.org/oss-sec/2023/q3/229
x_transferred
Hyperlink: https://access.redhat.com/errata/RHSA-2024:2950
Resource:
vendor-advisory
x_refsource_REDHAT
x_transferred
Hyperlink: https://access.redhat.com/errata/RHSA-2024:3138
Resource:
vendor-advisory
x_refsource_REDHAT
x_transferred
Hyperlink: https://access.redhat.com/security/cve/CVE-2023-42755
Resource:
vdb-entry
x_refsource_REDHAT
x_transferred
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2239847
Resource:
issue-tracking
x_refsource_REDHAT
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
Resource:
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
Resource:
x_transferred
Hyperlink: https://seclists.org/oss-sec/2023/q3/229
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:05 Oct, 2023 | 19:15
Updated At:13 Sep, 2024 | 19:15

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Secondary3.16.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CPE Matches

Linux Kernel Organization, Inc
linux
>>linux_kernel>>Versions before 6.3(exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Red Hat, Inc.
redhat
>>enterprise_linux>>8.0
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-125Primarynvd@nist.gov
CWE-125Secondarysecalert@redhat.com
CWE ID: CWE-125
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-125
Type: Secondary
Source: secalert@redhat.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://access.redhat.com/errata/RHSA-2024:2950secalert@redhat.com
N/A
https://access.redhat.com/errata/RHSA-2024:3138secalert@redhat.com
N/A
https://access.redhat.com/security/cve/CVE-2023-42755secalert@redhat.com
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2239847secalert@redhat.com
Issue Tracking
Patch
Third Party Advisory
https://seclists.org/oss-sec/2023/q3/229secalert@redhat.com
Exploit
Mailing List
Patch
Third Party Advisory
Hyperlink: https://access.redhat.com/errata/RHSA-2024:2950
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2024:3138
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2023-42755
Source: secalert@redhat.com
Resource:
Third Party Advisory
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2239847
Source: secalert@redhat.com
Resource:
Issue Tracking
Patch
Third Party Advisory
Hyperlink: https://seclists.org/oss-sec/2023/q3/229
Source: secalert@redhat.com
Resource:
Exploit
Mailing List
Patch
Third Party Advisory

Change History

0
Information is not available yet

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