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CVE-2023-6270: Kernel: aoe: improper reference count leads to use-after-free vulnerability

Modified
AliasesUBUNTU-CVE-2023-6270DEBIAN-CVE-2023-6270CGA-264c-875g-f6rm
Published 04-01-2024Last modified 29-10-2026

Vulnerability summary

CVE-2023-6270 is a high (CVSS 7.0) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 78 · Related 72
DLA-3840-1DLA-3842-1DSA-5681-1LSN-0104-1LSN-0105-1MGASA-2024-0141

Timeline

  1. 04-01-2024
    PublishedVulnerability first disclosed.
  2. 29-10-2026
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.41% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu117 products
  • linuxAll versions (No fix recorded) | < 4.4.0-256.290 | < 4.15.0-226.238 | < 5.4.0-189.209 | < 5.15.0-112.122 | < 6.8.0-35.35
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1133.139 | < 4.4.0-1171.186 | < 4.15.0-1169.182 | < 5.4.0-1128.138 | < 5.15.0-1063.69 | < 6.8.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard24 products
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12All versions (No fix recorded)
  • linux-aws-6.18All versions (No fix recorded)
  • linux-aws-genericAll versions (No fix recorded)
  • linux-aws-generic-boot-installedAll versions (No fix recorded)
Debian2 products
Fedoraproject1 product
Linux1 product

5 vendors · 145 products

References

37 links
Show all 37 references