CVE-2026-53093 Details
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix error pointer dereference The function brcmf_chip_add_core() can return an error pointer and is not checked. Add checks for error pointer. Detected by Smatch: drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:1010 brcmf_chip_recognition() error: 'core' dereferencing possible ERR_PTR() drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:1013 brcmf_chip_recognition() error: 'core' dereferencing possible ERR_PTR() drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:1016 brcmf_chip_recognition() error: 'core' dereferencing possible ERR_PTR() drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:1019 brcmf_chip_recognition() error: 'core' dereferencing possible ERR_PTR() drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:1022 brcmf_chip_recognition() error: 'core' dereferencing possible ERR_PTR() [add missing wifi: prefix]
A vulnerability has been identified in the Linux kernel's handling of Broadcom's brcmfmac wireless driver. The issue arises because the function brcmf_chip_add_core() can return an error pointer, which is not properly checked before being dereferenced. This oversight could lead to a null pointer dereference, potentially causing a denial-of-service condition. The vulnerability affects several versions of the Linux kernel.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability. The patches can be downloaded from the Linux kernel Git repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2e0e5a43ed126f896a4ad31ade66c90270601bae | kernel.org | Patch |
| https://git.kernel.org/stable/c/334c68750eee84c2327db1d152be83ff5ad8e20b | kernel.org | Patch |
| https://git.kernel.org/stable/c/99ef547659178eef6d6ba4738a9d989ce90cf909 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a3b45090a91e2f0b9715870d8f8d9ca2fdfbc1af | kernel.org | Patch |
| https://git.kernel.org/stable/c/bd6c906e0c4af6d5d0c49c3c4ee090b4913da17d | kernel.org | Patch |
| https://git.kernel.org/stable/c/cbea71b4480394708f9a6e007a0385acfe5e1ec8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d3f280be48f1c672cb10e8026c236d0cca60048a | kernel.org | Patch |
| https://git.kernel.org/stable/c/dd8592fc6007a451c3e4b9025de365e39de8178a | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.15, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | Initial Analysis | [email protected] |
| Jun 24, 2026 | New CVE Received | kernel.org |