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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-71291

misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22affected
  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < ece3722169ba93734bfd1f06255e8ab7f19fe964affected
  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fbaffected
  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < 3842f93e6e29d5cc1dcb9e5bda70587b444bed69affected
  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bdaffected
  • 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 to < ba75ecb97d3f4e95d59002c13afb6519205be6cbaffected

Linux Linux

Default version status: affected

  • 5.19affected
  • 0 to < 5.19unaffected
  • 6.1.165 to ≤ 6.1.*unaffected
  • 6.6.128 to ≤ 6.6.*unaffected
  • 6.12.75 to ≤ 6.12.*unaffected
  • 6.18.16 to ≤ 6.18.*unaffected
  • 6.19.6 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References