CVE-2023-52454

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

MEDIUM

5.5

CVSS Score

Published: February 23, 2024 at 02:46 PM UTC

Updated: August 5, 2026 at 09:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

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().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.0 ≤ v < 5.10.2095.0 ≤ v < 5.15.1485.0 ≤ v < 5.4.2685.0 ≤ v < 6.1.755.0 ≤ v < 6.6.145.0 ≤ v < 6.7.25.0 ≤ v < 6.85.0.0 ≤ v < 5.4.2685.11.0 ≤ v < 5.15.1485.16.0 ≤ v < 6.1.755.5.0 ≤ v < 5.10.2096.2.0 ≤ v < 6.6.146.7.0 ≤ v < 6.7.25.0872d26a391da92ed8f0c0f5cb5fef428067b7f30

Vendor states this is fixed in 24e05760186dc070d3db190ca61efdbce23afc88 (fixed)

Vendor states this is fixed in 2871aa407007f6f531fae181ad252486e022df42 (fixed)

Vendor states this is fixed in 4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d (fixed)

Vendor states this is fixed in 70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 (fixed)

Vendor states this is fixed in ee5e7632e981673f42a50ade25e71e612e543d9d (fixed)

Vendor states this is fixed in efa56305908ba20de2104f1b8508c6a7401833be (fixed)

Vendor states this is fixed in f775f2621c2ac5cc3a0b3a64665dad4fb146e510 (fixed)

Vendor states this is fixed in 5.0 (unaffected)

Vendor states this is fixed in 5.10.209 (unaffected)

Vendor states this is fixed in 5.15.148 (unaffected)

Vendor states this is fixed in 5.4.268 (unaffected)

Vendor states this is fixed in 6.1.75 (unaffected)