Use-after-free in parse_lease_state()
Published Nov 3, 2023
8.1
HIGHCVSS 3.1
EPSS 1.08%
Description
An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
Affected products
-
- Vendor n/a Product Kernel Defaultaffected
Configuration 1
- ≥ 5.15 · < 5.15.145
- ≥ 5.16 · < 6.1.34
- ≥ 6.2 · < 6.3.8
- 6.4
- 6.4
- 6.4
- 6.4
- 6.4
Configuration 2
- 37
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 shipped kernel version was seen affected by this problem. These files are not built in our source code.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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.
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 | 1.08% (0.01077) | 63.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.08% (0.01077) | 60.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00050) | 12.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.11% (0.00111) | 46.05th | v3 (v2023.03.01) |
| Jul 17, 2024 | 0.07% (0.00066) | 29.39th | v3 (v2023.03.01) |
| Dec 22, 2023 | 0.07% (0.00066) | 27.37th | v3 (v2023.03.01) |
| Nov 14, 2023 | 0.06% (0.00062) | 24.95th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.04% (0.00045) | 12.64th | v3 (v2023.03.01) |
References (6)
- https://access.redhat.com/security/cve/CVE-2023-1194 vdb-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2154176 issue-trackingx_refsource_REDHATIssue TrackingThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-1194
- https://security.netapp.com/advisory/ntap-20231221-0006/ Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2023-1194
- https://www.spinics.net/lists/stable-commits/msg303065.html Mailing ListPatch
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-1194 | vdb-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2154176 | issue-trackingx_refsource_REDHATIssue TrackingThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2023-1194 | ||
| https://security.netapp.com/advisory/ntap-20231221-0006/ | Third Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2023-1194 | ||
| https://www.spinics.net/lists/stable-commits/msg303065.html | Mailing ListPatch |
Change history (4)
- MITRE
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H → CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
- CVSS score changed from 8.1 to
7.1 8.1 → 7.1
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
- REDHAT
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H → CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CVSS score changed from 7.1 to
8.1 7.1 → 8.1
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H