CVE-2023-52454

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

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().

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2023-52454?
CVE-2023-52454 has been scored as a medium severity vulnerability.
How to fix CVE-2023-52454?
To fix CVE-2023-52454, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-52454 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-52454 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-52454?
CVE-2023-52454 affects Linux Linux, Linux Linux.
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