High severity · published Jan 4, 2024
CVE-2023-6270
Kernel: aoe: improper reference count leads to use-after-free vulnerability
7.0
CVSS
0.4%
EPSS
No
On KEV
Description
A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 6.9 · source: NVD
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
39 · source: NVD
In the news
VulnerabilityHigh
ZDI-26-238: Linux Kernel AoE Driver Use-After-Free Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2023-6270.
Mar 30, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6270
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6270
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-6270
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2256786
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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