Kernel: udmabuf: improper validation of array index leading to local privilege escalation

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Summary

CVECVE-2023-2008
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-14 21:15:08 UTC
Updated2026-08-10 18:17:30 UTC
DescriptionA flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-129 | CWE-129 Improper Validation of Array Index

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Primary8.2HIGHCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.2HIGHCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Kernel affected 4.20 5.4.202 semver Not specified
CNA Linux Kernel affected 5.5 5.10.127 semver Not specified
CNA Linux Kernel affected 5.11 5.15.51 semver Not specified
CNA Linux Kernel affected 5.16 5.18.8 semver Not specified
CNA Linux Kernel unaffected 5.19 semver Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-162.6.1.el9_1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-162.6.1.rt21.168.el9_1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-162.6.1.el9_1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support unaffected 0:5.14.0-70.58.1.el9_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support unaffected 0:5.14.0-70.58.1.rt21.129.el9_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2022:7933 [email protected] access.redhat.com
CVE-2023-2008 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
ZDI-23-441 | Zero Day Initiative af854a3a-2127-422b-91ae-364da2661108 www.zerodayinitiative.com Third Party Advisory, VDB Entry
access.redhat.com/errata/RHSA-2022:8267 [email protected] access.redhat.com
udmabuf: add back sanity check · torvalds/linux@05b252c · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch
access.redhat.com/security/cve/CVE-2023-2008 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2023:3490 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2023:3465 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2023:3470 [email protected] access.redhat.com
2186862 – (CVE-2023-2008) CVE-2023-2008 kernel: udmabuf: improper validation of array index leading to local privilege escalation af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
Red Hat Bugzilla - 404 Object Not Found MITRE bugzilla.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-04-12T00:00:00.000ZReported to Red Hat.
CNA2023-04-13T00:00:00.000ZMade public.

Legacy QID Mappings

  • 181858 Debian Security Update for linux (CVE-2023-2008)
  • 241588 Red Hat Update for kernel (RHSA-2023:3465)
  • 241590 Red Hat Update for kernel-rt (RHSA-2023:3470)
  • 241591 Red Hat Update for kpatch-patch (RHSA-2023:3490)
  • 673393 EulerOS Security Update for kernel (EulerOS-SA-2023-2647)
  • 674113 EulerOS Security Update for kernel (EulerOS-SA-2023-2689)
  • 753981 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2146-1)
  • 753982 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2148-1)
  • 906901 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (26280-1)
  • 906974 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (26262-1)

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