Ubuntu.comUB:CVE-2023-6238CVE-2023-6238
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
8.8%
A buffer overflow vulnerability was found in the NVM Express (NVMe) driver
in the Linux kernel. Only privileged user could specify a small meta buffer
and let the device perform larger Direct Memory Access (DMA) into the same
buffer, overwriting unrelated kernel memory, causing random kernel crashes
and memory corruption.
Bugs
- <https://bugzilla.redhat.com/show_bug.cgi?id=2250834>
- <https://bugzilla.suse.com/show_bug.cgi?id=1217384>
Notes
| Author | Note |
|---|---|
| Priority reason: Requires a privileged user to grant access to the device in order to exploit. | |
| sbeattie | unfixed upstream as of 2024-04-10 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure-6.5 | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux-gcp | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-gcp | < any | UNKNOWN |
References
access.redhat.com/security/cve/CVE-2023-6238
launchpad.net/bugs/cve/CVE-2023-6238
lore.kernel.org/linux-nvme/[email protected]/T/#u
lore.kernel.org/linux-nvme/[email protected]/T/#u
nvd.nist.gov/vuln/detail/CVE-2023-6238
security-tracker.debian.org/tracker/CVE-2023-6238
www.cve.org/CVERecord?id=CVE-2023-6238
Related
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
8.8%