5.5

CVE-2023-52454

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

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().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.0.0 < 5.4.268
Linux ≫ Linux Kernel Version >= 5.5.0 < 5.10.209
Linux ≫ Linux Kernel Version >= 5.11.0 < 5.15.148
Linux ≫ Linux Kernel Version >= 5.16.0 < 6.1.75
Linux ≫ Linux Kernel Version >= 6.2.0 < 6.6.14
Linux ≫ Linux Kernel Version >= 6.7.0 < 6.7.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.134
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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