CVE-2025-71291

Advisory lineage Upstream: 0 Downstream: 5
Analyzed
Published: 06 May 2026, 11:32
Last modified:11 May 2026, 21:57

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.12% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 May 2026, 11:32
Published
Vulnerability first disclosed
11 May 2026, 21:57
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.12%• Percentile: 2%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ece3722169ba93734bfd1f06255e8ab7f19fe964 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3842f93e6e29d5cc1dcb9e5bda70587b444bed69 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ba75ecb97d3f4e95d59002c13afb6519205be6cb | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22 | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < ece3722169ba93734bfd1f06255e8ab7f19fe964 | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < 3842f93e6e29d5cc1dcb9e5bda70587b444bed69 | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd | ≥ 88517757a829e9ce146a6c7233ad5dcdc66fcbb0, < ba75ecb97d3f4e95d59002c13afb6519205be6cb | 5.19

  • linux•linux kernel

    ≥ 5.19, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6

References (6)