CVE-2023-52454

nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

State: Published
Severity: 7.5 High
Published: Feb 23, 2024
Updated: Aug 5, 2026
Reserved: Feb 20, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec().

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110

Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq().

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before ee5e7632e981673f42a50ade25e71e612e543d9dAffected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before f775f2621c2ac5cc3a0b3a64665dad4fb146e510Affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 4cb3cf7177ae3666be7fb27d4ad4d72a295fb02dAffected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 2871aa407007f6f531fae181ad252486e022df42Affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 24e05760186dc070d3db190ca61efdbce23afc88Affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68Affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before efa56305908ba20de2104f1b8508c6a7401833beAffected
LinuxLinux	5.0Affected before 5.0Not affected 5.4.268 through 5.4.Not affected 5.10.209 through 5.10.Not affected 5.15.148 through 5.15.Not affected 6.1.75 through 6.1.Not affected 6.6.14 through 6.6.Not affected 6.7.2 through 6.7.Not affected 6.8 and laterNot affected

Product

Versions

LinuxLinux

872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before ee5e7632e981673f42a50ade25e71e612e543d9dAffected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before f775f2621c2ac5cc3a0b3a64665dad4fb146e510Affected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 4cb3cf7177ae3666be7fb27d4ad4d72a295fb02dAffected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 2871aa407007f6f531fae181ad252486e022df42Affected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 24e05760186dc070d3db190ca61efdbce23afc88Affected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before 70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68Affected
872d26a391da92ed8f0c0f5cb5fef428067b7f30 to before efa56305908ba20de2104f1b8508c6a7401833beAffected

LinuxLinux

5.0Affected
before 5.0Not affected
5.4.268 through 5.4.*Not affected
5.10.209 through 5.10.*Not affected
5.15.148 through 5.15.*Not affected
6.1.75 through 6.1.*Not affected
6.6.14 through 6.6.*Not affected
6.7.2 through 6.7.*Not affected
6.8 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.