CVE-2023-53658

MEDIUM EPSS 3.6%
Published Oct 7, 20258mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 7, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: spi: bcm-qspi: return error if neither hif_mspi nor mspi is available If neither a "hif_mspi" nor "mspi" resource is present, the driver will just early exit in probe but still return success. Apart from not doing anything meaningful, this would then also lead to a null pointer access on removal, as platform_get_drvdata() would return NULL, which it would then try to dereference when trying to unregister the spi master. Fix this by unconditionally calling devm_ioremap_resource(), as it can handle a NULL res and will then return a viable ERR_PTR() if we get one. The "return 0;" was previously a "goto qspi_resource_err;" where then ret was returned, but since ret was still initialized to 0 at this place this was a valid conversion in 63c5395bb7a9 ("spi: bcm-qspi: Fix use-after-free on unbind"). The issue was not introduced by this commit, only made more obvious.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥4.9  –  <4.14.322
linuxlinux_kernel*≥4.15  –  <4.19.291
linuxlinux_kernel*≥4.20  –  <5.4.251
linuxlinux_kernel*≥5.5  –  <5.10.188
linuxlinux_kernel*≥5.11  –  <5.15.121
linuxlinux_kernel*≥5.16  –  <6.1.39
linuxlinux_kernel*≥6.2  –  <6.4.4

References 8

  • git.kernel.org https://git.kernel.org/stable/c/217b6ea8cf7b819477bca597a6ae2d43d38ba283
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/22ae32d80ef590d12a2364e4621f90f7c58445c7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/398e6a015877d44327f754aeb48ff3354945c78c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c1f23ad34fcdace50275a6aa1e1969b41c6233f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a91c34357afcfaa5307e254f22a8452550a07b34
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d20db3c58a7f9361e370a7850ceb60dbdf62eea3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3dcdb43c872a3b967345144151a2c9bb9124c9b
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/217b6ea8cf7b819477bca597a6ae2d43d38ba283
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/22ae32d80ef590d12a2364e4621f90f7c58445c7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/398e6a015877d44327f754aeb48ff3354945c78c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c1f23ad34fcdace50275a6aa1e1969b41c6233f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a91c34357afcfaa5307e254f22a8452550a07b34
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d20db3c58a7f9361e370a7850ceb60dbdf62eea3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3dcdb43c872a3b967345144151a2c9bb9124c9b
    Patch