Kernel: udmabuf: improper validation of array index leading to local privilege escalation
Published Apr 14, 2023
8.2
HIGHCVSS 3.1
EPSS 1.01%
Description
A 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.
Affected products
- Vendor n/a Product Linux kernel udmabuf device driver Defaultn/a
- Version Fixed in kernel v5.19-rc4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Linux kernel udmabuf device driver | n/a |
|
- < 5.19
- ≥ 4.20 · < 5.4.202
- ≥ 5.5 · < 5.10.127
- ≥ 5.11 · < 5.15.51
- ≥ 5.16 · < 5.18.8
- 5.19
- 5.19
- 5.19
- 5.19
No data.
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1
Fixed · RHSA-2022:7933
Red Hat Enterprise Linux 9.0 Extended Update Support
kernel-0:5.14.0-70.58.1.el9_0
Fixed · RHSA-2023:3465
Red Hat Enterprise Linux 9.0 Extended Update Support
kernel-rt-0:5.14.0-70.58.1.rt21.129.el9_0
Fixed · RHSA-2023:3470
Red Hat Enterprise Linux 9.0 Extended Update Support
kpatch-patch
Fixed · RHSA-2023:3490
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1 | Fixed | RHSA-2022:7933 |
| Red Hat Enterprise Linux 9.0 Extended Update Support | kernel-0:5.14.0-70.58.1.el9_0 | Fixed | RHSA-2023:3465 |
| Red Hat Enterprise Linux 9.0 Extended Update Support | kernel-rt-0:5.14.0-70.58.1.rt21.129.el9_0 | Fixed | RHSA-2023:3470 |
| Red Hat Enterprise Linux 9.0 Extended Update Support | kpatch-patch | Fixed | RHSA-2023:3490 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Enterprise Linux 6, 7, and 8 are not affected by this flaw as they did not include support for the userspace dmabuf misc driver (CONFIG_UDMABUF is not set).
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Apr 23, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.01% (0.01010) | 61.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.00% (0.01005) | 58.29th | v5 (v2026.06.15) |
| Apr 15, 2026 | 1.55% (0.01547) | 81.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.48% (0.00477) | 62.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00045) | 18.07th | v3 (v2023.03.01) |
| Apr 20, 2024 | 0.09% (0.00092) | 38.63th | v3 (v2023.03.01) |
| Mar 14, 2024 | 0.10% (0.00105) | 41.75th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.10% (0.00095) | 38.41th | v3 (v2023.03.01) |
| Dec 12, 2023 | 0.08% (0.00076) | 31.51th | v3 (v2023.03.01) |
| Oct 5, 2023 | 0.10% (0.00105) | 42.32th | v3 (v2023.03.01) |
| Sep 1, 2023 | 0.09% (0.00091) | 38.19th | v3 (v2023.03.01) |
| Jun 13, 2023 | 0.07% (0.00074) | 30.28th | v3 (v2023.03.01) |
| Apr 25, 2023 | 0.04% (0.00045) | 12.68th | v3 (v2023.03.01) |
| Apr 15, 2023 | 0.05% (0.00050) | 16.43th | v3 (v2023.03.01) |
References (12)
- https://access.redhat.com/errata/RHSA-2022:7933 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2022:8267 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2023:3465 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2023:3470 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2023:3490 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-2008 vdb-entryx_refsource_REDHATVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2186862 issue-trackingx_refsource_REDHATIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4 Patch
- https://nvd.nist.gov/vuln/detail/CVE-2023-2008
- https://security.netapp.com/advisory/ntap-20230517-0007/ Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2023-2008
- https://www.zerodayinitiative.com/advisories/ZDI-23-441/ Third Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2022:7933 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2022:8267 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2023:3465 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2023:3470 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2023:3490 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2023-2008 | vdb-entryx_refsource_REDHATVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2186862 | issue-trackingx_refsource_REDHATIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4 | Patch | |
| https://nvd.nist.gov/vuln/detail/CVE-2023-2008 | ||
| https://security.netapp.com/advisory/ntap-20230517-0007/ | Third Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2023-2008 | ||
| https://www.zerodayinitiative.com/advisories/ZDI-23-441/ | Third Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.