{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63967", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.024Z", "datePublished": "2026-07-19T14:55:54.999Z", "dateUpdated": "2026-07-19T14:55:54.999Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:55:54.999Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer\n\nThe tagged FIFO path declares iio_buff on the stack with __aligned(8)\nbut no initializer, but there is a hole in the structure, which will\nthen leak to userspace as ST_LSM6DSX_SAMPLE_SIZE bytes (6) will be\ncopied, but the space between that and the timestamp are not\ninitialized.\n\nCommit c14edb4d0bdc (\"iio:imu:st_lsm6dsx Fix alignment and data leak\nissues\") moved the untagged FIFO path to a kzalloc'd buffer in hw->scan,\nbut for the tagged path it only added the alignment qualifier and not\nthe initializer :(\n\nFix this by just zero-initializing the structure on the stack."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c"], "versions": [{"version": "c14edb4d0bdc53f969ea84c7f384472c28b1a9f8", "lessThan": "ff8d3c088b77b11782f2c3b97e37425be050e8de", "status": "affected", "versionType": "git"}, {"version": "c14edb4d0bdc53f969ea84c7f384472c28b1a9f8", "lessThan": "fe1a7f99e72ebd2880515332b79b8c256be22aca", "status": "affected", "versionType": "git"}, {"version": "c14edb4d0bdc53f969ea84c7f384472c28b1a9f8", "lessThan": "babf1943a40bb5669db57d30ca16c22504b18e07", "status": "affected", "versionType": "git"}, {"version": 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{"bugzilla": {"description": "kernel: iio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer", "id": "2502342", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502342"}, "csaw": false, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\niio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer\nThe tagged FIFO path declares iio_buff on the stack with __aligned(8)\nbut no initializer, but there is a hole in the structure, which will\nthen leak to userspace as ST_LSM6DSX_SAMPLE_SIZE bytes (6) will be\ncopied, but the space between that and the timestamp are not\ninitialized.\nCommit c14edb4d0bdc (\"iio:imu:st_lsm6dsx Fix alignment and data leak\nissues\") moved the untagged FIFO path to a kzalloc'd buffer in hw->scan,\nbut for the tagged path it only added the alignment qualifier and not\nthe initializer :(\nFix this by just zero-initializing the structure on the stack.", "A flaw was found in the Linux kernel's `st_lsm6dsx` driver. This vulnerability occurs in the tagged FIFO (First-In, First-Out) buffer path, where a buffer on the stack is not properly initialized. A local attacker could exploit this by reading uninitialized memory from the kernel stack, leading to information disclosure."], "name": "CVE-2026-63967", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63967\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63967\nhttps://lore.kernel.org/linux-cve-announce/2026071959-CVE-2026-63967-5590@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,ff8d3c088b77b11782f2c3b97e37425be050e8de)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,fe1a7f99e72ebd2880515332b79b8c256be22aca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,babf1943a40bb5669db57d30ca16c22504b18e07)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,d42ac0bfb6a16617c62a59d53706579c7fadbfa6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,3147b303b8c7d9f91da4b849ece33b45048f5eaf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,e6bb3a49c5f9de870ea95e69775df785728e3366)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,890d0312d5f94be43eac21f5a34d3bccc60d051b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c14edb4d0bdc53f969ea84c7f384472c28b1a9f8,c9d8e9adaa63150ef7e833480b799d0bab83a276)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "a42ca3b182ccb766666a0be1053921cba190e2de"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.9.5,5.10)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.93,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-21T16:00:08.545498+00:00", "updated": "2026-07-22T18:30:03.529703+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-788", "CWE-200"]}