TI-2023-28853 Aliases CVE-2023-52508 GHSA-9mvw-qw27-cc95

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

LOW 24CWE-476Published 2024-03-02 · Updated 2026-05-23

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00224 13th percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.19, 6.1.56, 6.5.6 +1Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.18.18 to before 5.19	5.19	Patch available	CNA
Linux	Linux	5.19 and later	6.1.56, 6.5.6, 6.6	Patch available	CNA

Linux VendorLinux Affected 5.18.18 to before 5.19 Fixed in 5.19 Patch available CNA
Linux VendorLinux Affected 5.19 and later Fixed in 6.1.56, 6.5.6, 6.6 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	before 6.1.56; 6.2 to before 6.5.6	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.6:rc1::::::	6.6 rc1	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.1.56; 6.2 to before 6.5.6 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:* Versions 6.6 rc1 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.19
Fix · CNA Linux (Linux) Fixed in 6.1.56, 6.5.6, 6.6

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 9	Affected	No fix yet

Not affected: 2 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 8

Timeline

2026-10-02 Threatist record created from CVE-2023-52508
2026-10-03 Alias added: GHSA-9mvw-qw27-cc95

References

Patch 3

TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3

See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences