kernel: DPT I2O controller TOCTOU information disclosure vulnerability
Published Apr 24, 2023
7.8
HIGHCVSS 3.1
EPSS 0.29%
Description
The specific flaw exists within the DPT I2O Controller driver. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.
Affected products
- Vendor n/a Product Linux kernel's DPT I2O Controller driver Defaultn/a
- Version Fixed in kernel v6.0-rc1StatusaffectedConstraints-
- 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's DPT I2O Controller driver | n/a |
|
Configuration 1
- < 6.0
Configuration 2
- 10.0
- 11.0
Configuration 3
- n/a
Configuration 4
- n/a
Configuration 5
- n/a
Configuration 6
- n/a
Configuration 7
- n/a
Configuration 8
- n/a
No data.
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
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
No Red Hat products are affected by this flaw, as the i2o driver is not included in any shipping kernel release.
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:N/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
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 (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.29% (0.00288) | 19.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00288) | 20.25th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00028) | 4.98th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00049) | 20.79th | v3 (v2023.03.01) |
| May 31, 2024 | 0.05% (0.00046) | 16.79th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.05% (0.00046) | 14.77th | v3 (v2023.03.01) |
| May 5, 2023 | 0.04% (0.00045) | 12.68th | v3 (v2023.03.01) |
| Apr 25, 2023 | 0.07% (0.00065) | 26.54th | v3 (v2023.03.01) |
References (10)
- https://access.redhat.com/security/cve/CVE-2023-2007 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2208311 Issue Tracking
- https://github.com/torvalds/linux/commit/b04e75a4a8a81887386a0d2dbf605a48e779d2a0 Patch
- https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html mailing-listMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-2007
- https://security.netapp.com/advisory/ntap-20240119-0011/ Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2023-2007
- https://www.debian.org/security/2023/dsa-5480 vendor-advisoryThird Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-23-440/
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-2007 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2208311 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/b04e75a4a8a81887386a0d2dbf605a48e779d2a0 | Patch | |
| https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html | mailing-listMailing ListThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html | mailing-listMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2023-2007 | ||
| https://security.netapp.com/advisory/ntap-20240119-0011/ | Third Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2023-2007 | ||
| https://www.debian.org/security/2023/dsa-5480 | vendor-advisoryThird Party Advisory | |
| https://www.zerodayinitiative.com/advisories/ZDI-23-440/ |
Change history (0)
No recorded changes yet.