CVE WatchOct 14, 2026

CVE-2025-71291

In the Linux kernel, the following vulnerability has been resolved: misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()

CVSS

5.5

Medium

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: May 6, 2026 · Last modified: Oct 14, 2026 · CWE-476

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-262026-10-25

Technical description

In the Linux kernel, the following vulnerability has been resolved: misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read() In the function bcm_vk_read(), the pointer entry is checked, indicating that it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the following code may cause null-pointer dereferences: struct vk_msg_blk tmp_msg = entry->to_h_msg[0]; set_msg_id(&tmp_msg, entry->usr_msg_id); tmp_msg.size = entry->to_h_blks - 1; To prevent these possible null-pointer dereferences, copy to_h_msg, usr_msg_id, and to_h_blks from iter into temporary variables, and return these temporary variables to the application instead of accessing them through a potentially NULL entry.

Official references

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