CVE-2025-71291

{"id": "CVE-2025-71291", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "741c5a3a0cd893a4218fc0fc8c18403e54fcfb22", "versionType": "git"}, {"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "ece3722169ba93734bfd1f06255e8ab7f19fe964", "versionType": "git"}, {"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb", "versionType": "git"}, {"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "3842f93e6e29d5cc1dcb9e5bda70587b444bed69", "versionType": "git"}, {"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd", "versionType": "git"}, {"status": "affected", "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0", "lessThan": "ba75ecb97d3f4e95d59002c13afb6519205be6cb", "versionType": "git"}], "programFiles": ["drivers/misc/bcm-vk/bcm_vk_msg.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"status": "unaffected", "version": "0", "lessThan": "5.19", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.165", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.128", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/misc/bcm-vk/bcm_vk_msg.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T12:16:28.330", "references": [{"url": "https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmisc: bcm_vk: Correcci\u00f3n de posibles desreferencias de puntero nulo en bcm_vk_read()\n\nEn la funci\u00f3n bcm_vk_read(), el puntero entry es verificado, indicando que puede ser NULL. Si entry es NULL y rc se establece en -EMSGSIZE, el siguiente c\u00f3digo puede causar desreferencias de puntero nulo:\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\nPara prevenir estas posibles desreferencias de puntero nulo, copie to_h_msg, usr_msg_id y to_h_blks de iter a variables temporales, y devuelva estas variables temporales a la aplicaci\u00f3n en lugar de acceder a ellas a trav\u00e9s de un entry potencialmente NULL."}], "lastModified": "2026-10-14T13:10:00.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3DD2C202-0D8D-4C7D-A980-CFCF610F7707", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}