CVE-2023-52454 nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

2024-02-2314:46:17

Linux

www.cve.org

linux kernel

vulnerability

kernel panic

nvmet-tcp

h2c pdu

fatal error

packet size

maxh2cdata parameter

AI Score

6.4

Confidence

High

EPSS

Percentile

5.1%

JSON

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().

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/nvme/target/tcp.c"
    ],
    "versions": [
      {
        "version": "872d26a391da",
        "lessThan": "ee5e7632e981",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "f775f2621c2a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "4cb3cf7177ae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "2871aa407007",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "24e05760186d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "70154e8d015c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "872d26a391da",
        "lessThan": "efa56305908b",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/nvme/target/tcp.c"
    ],
    "versions": [
      {
        "version": "5.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.0",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.268",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.209",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.148",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.75",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]