8.8

CVE-2023-5178: Kernel: use after free in nvmet_tcp_free_crypto in nvme

Modified
AliasesRHSA-2023:7559UBUNTU-CVE-2023-5178DEBIAN-CVE-2023-5178
Published 01-11-2023Last modified 14-10-2026

Vulnerability summary

CVE-2023-5178 is a high (CVSS 8.8) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 9.62% chance of exploitation in the next 30 days, higher than 95.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
9.62%
0%100%
Low · +0.48 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 52 · Related 30
DLA-3711-1DSA-5594-1MGASA-2023-0328MGASA-2023-0331RHSA-2023:7370RHSA-2023:7379

Timeline

  1. 01-11-2023
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

9.62%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

Increase +0.48 pp

From 9.14% 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: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu106 products
  • linux< 5.4.0-169.187 | < 5.15.0-91.101
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1116.126 | < 5.15.0-1051.56
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Redhat13 products
  • enterprise_linux8.0 | 9.0
  • kpatch-patch-4_18_0-305_103_1< 0:1-2.el8_4
  • kpatch-patch-4_18_0-305_103_1-debuginfo< 0:1-2.el8_4
  • kpatch-patch-4_18_0-305_103_1-debugsource< 0:1-2.el8_4
  • kpatch-patch-4_18_0-305_108_1< 0:1-1.el8_4
Netapp3 products
Debian1 product
  • linux< 6.1.64-1 | < 6.5.8-1
Linux1 product
  • linux_kernel≥ 5.0, < 5.4.260 | ≥ 5.5, < 5.10.199 | ≥ 5.11, < 5.15.137 | ≥ 5.16, < 6.1.60 | ≥ 6.2, < 6.5.9

5 vendors · 124 products

References

54 links
Show all 54 references