Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.19, < 6.1.165 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bdPatch
- https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69Patch
- https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22Patch
- https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fbPatch
- https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cbPatch
- https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964Patch
FAQ
What is CVE-2025-71291?
CVE-2025-71291 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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,...
How severe is CVE-2025-71291?
CVE-2025-71291 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-71291?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.