5.5

CVE-2023-52508: nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid()

Analyzed
AliasesUBUNTU-CVE-2023-52508DEBIAN-CVE-2023-52508
Published 02-03-2024Last modified 23-05-2026

Vulnerability summary

CVE-2023-52508 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.22%
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 8 · Related 8
SUSE-SU-2024:1320-1SUSE-SU-2024:1321-1SUSE-SU-2024:1465-1SUSE-SU-2024:1466-1SUSE-SU-2024:1480-1SUSE-SU-2024:1489-1

Timeline

  1. 02-03-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid() The nvme_fc_fcp_op structure describing an AEN operation is initialized with a null request structure pointer. An FC LLDD may make a call to nvme_fc_io_getuuid passing a pointer to an nvmefc_fcp_req for an AEN operation. Add validation of the request structure pointer before dereference.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% 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.

Ubuntu75 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 827fc630e4c8087df5a8e8ee013b686bd6f13736, < be90c9e29dd59b7d19a73297a1590ff3ec1d22ea | ≥ 827fc630e4c8087df5a8e8ee013b686bd6f13736, < dd46b3ac7322baf3772b33b29726e94f98289db7 | ≥ 827fc630e4c8087df5a8e8ee013b686bd6f13736, < 8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c | 7a41fdf27a4b1ee565ce5bf3e409b2df0b8514c4 | ≥ 5.18.18, < 5.19 | 5.19
  • linux_kernel< 6.1.56 | ≥ 6.2, < 6.5.6 | 6.6:rc1
Debian1 product
  • linux< 6.1.64-1 | < 6.5.6-1

3 vendors · 78 products

References

7 links