{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71291","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-06T11:31:45.509Z","datePublished":"2026-05-06T11:32:23.223Z","dateUpdated":"2026-05-11T21:57:21.624Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:57:21.624Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()\n\nIn the function bcm_vk_read(), the pointer entry is checked, indicating\nthat it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the\nfollowing code may cause null-pointer dereferences:\n\n  struct vk_msg_blk tmp_msg = entry->to_h_msg[0];\n  set_msg_id(&tmp_msg, entry->usr_msg_id);\n  tmp_msg.size = entry->to_h_blks - 1;\n\nTo prevent these possible null-pointer dereferences, copy to_h_msg,\nusr_msg_id, and to_h_blks from iter into temporary variables, and return\nthese temporary variables to the application instead of accessing them\nthrough a potentially NULL entry."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"],"versions":[{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"741c5a3a0cd893a4218fc0fc8c18403e54fcfb22","status":"affected","versionType":"git"},{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"ece3722169ba93734bfd1f06255e8ab7f19fe964","status":"affected","versionType":"git"},{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb","status":"affected","versionType":"git"},{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"3842f93e6e29d5cc1dcb9e5bda70587b444bed69","status":"affected","versionType":"git"},{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd","status":"affected","versionType":"git"},{"version":"88517757a829e9ce146a6c7233ad5dcdc66fcbb0","lessThan":"ba75ecb97d3f4e95d59002c13afb6519205be6cb","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.165","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.128","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.75","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22"},{"url":"https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964"},{"url":"https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb"},{"url":"https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69"},{"url":"https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd"},{"url":"https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb"}],"title":"misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()","x_generator":{"engine":"bippy-1.2.0"}}}}