CVE-2023-6270 — Use After Free in Linux

CWE-416 — Use After FreeCWE-911 — Improper Update of Reference Count85 documents11 sources
Severity
7.8HIGHNVD
NVD7.0CNA7.0OSV7.0OSV6.5OSV5.5
EPSS
0.0%
top 93.79%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LinuxLinux KernelDebian Linux+1 more
Timeline
PublishedJan 4
Latest updateAug 14

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:HExploitability: 1.0 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel2.6.22 — 4.19.311+18
▶Debianlinux/linux_kernel< 5.10.216-1+8
▶Ubuntulinux/linux_kernel< 5.4.0-189.209+9
▶CVEListV5linux/linuxad80c34944d7175fa1f5c7a55066020002921a99 — 12f7b89dd72b25da4eeaa22097877963cad6418e+21

Also affects: Debian Linux 10.0, Fedora 39

🔴Vulnerability Details

42
GHSA
GHSA-g9fr-wfpx-28xj: In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023↗2024-10-21
▶
CVEList
aoe: fix the potential use-after-free problem in more places↗2024-10-21
▶
OSV
CVE-2024-49982: In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023-6↗2024-10-21
▶
Kernel
aoe: fix the potential use-after-free problem in more places↗2024-10-02
▶
OSV
linux-oem-6.5 vulnerabilities↗2024-08-02
▶

📋Vendor Advisories

39
CISA ICS
Siemens Third-Party Components in SINEC OS↗2025-08-14
▶
Red Hat
kernel: aoe: fix the potential use-after-free problem in more places↗2024-10-21
▶
Ubuntu
Linux kernel vulnerabilities↗2024-08-02
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-26
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-23
▶

💬Community

1
Bugzilla
CVE-2023-6270 kernel: AoE: improper reference count leads to use-after-free vulnerability↗2024-01-04
▶
CVE-2023-6270 — Use After Free in Linux | cvebase