CVE-2023-52454

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

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Feb 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 products

Linux · Linux

References

https://git.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88 https://git.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42 https://git.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d https://git.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 https://git.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9d https://git.kernel.org/stable/c/efa56305908ba20de2104f1b8508c6a7401833be https://git.kernel.org/stable/c/f775f2621c2ac5cc3a0b3a64665dad4fb146e510 https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html