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LinuxCVE-2023-52893

HistoryAug 21, 2024 - 7:15 a.m.

CVE-2023-52893

2024-08-2107:15:05

CWE-476

Linux

web.nvd.nist.gov

linux kernel

null-deref

vulnerability

gsmi

fix

efi

variables

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

6.5

Confidence

Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

gsmi: fix null-deref in gsmi_get_variable

We can get EFI variables without fetching the attribute, so we must
allow for that in gsmi.

commit 859748255b43 (“efi: pstore: Omit efivars caching EFI varstore
access layer”) added a new get_variable call with attr=NULL, which
triggers panic in gsmi.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange3.0–4.14.304

linuxlinux_kernelRange4.15–4.19.271

linuxlinux_kernelRange4.20–5.4.230

linuxlinux_kernelRange5.5–5.10.165

linuxlinux_kernelRange5.11–5.15.90

linuxlinux_kernelRange5.16–6.1.8

linuxlinux_kernelMatch6.2rc1

linuxlinux_kernelMatch6.2rc2

linuxlinux_kernelMatch6.2rc3

linuxlinux_kernelMatch6.2rc4

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc4::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/firmware/google/gsmi.c"
    ],
    "versions": [
      {
        "version": "74c5b31c6618",
        "lessThan": "ee5763ef829b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "32313c11bdc8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "ffef77794fb5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "ae2a9dcc8caa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "eb0421d90f91",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "6646d769fdb0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74c5b31c6618",
        "lessThan": "a769b05eeed7",
        "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/firmware/google/gsmi.c"
    ],
    "versions": [
      {
        "version": "3.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.0",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.304",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.271",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.230",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.165",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.90",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.8",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]