CVE-2023-52454
Published: February 24, 2024Last modified: February 24, 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().
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.81-r0) |
| Stream | linux-lts | Fixed (6.6.58-r0) |
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