{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43380", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.006Z", "datePublished": "2026-05-08T14:21:28.702Z", "dateUpdated": "2026-05-11T22:23:28.160Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:23:28.160Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read\n\nThe q54sj108a2_debugfs_read function suffers from a stack buffer overflow\ndue to incorrect arguments passed to bin2hex(). The function currently\npasses 'data' as the destination and 'data_char' as the source.\n\nBecause bin2hex() converts each input byte into two hex characters, a\n32-byte block read results in 64 bytes of output. Since 'data' is only\n34 bytes (I2C_SMBUS_BLOCK_MAX + 2), this writes 30 bytes past the end\nof the buffer onto the stack.\n\nAdditionally, the arguments were swapped: it was reading from the\nzero-initialized 'data_char' and writing to 'data', resulting in\nall-zero output regardless of the actual I2C read.\n\nFix this by:\n1. Expanding 'data_char' to 66 bytes to safely hold the hex output.\n2. Correcting the bin2hex() argument order and using the actual read count.\n3. Using a pointer to select the correct output buffer for the final\n simple_read_from_buffer call."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwmon/pmbus/q54sj108a2.c"], "versions": [{"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "a0fc1b9c738fba231f190ab960c83202722efee5", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "c59090c50f62a17129fc4c5407bc4071305a9e82", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "52db5ef163c96f916d424e472fb17aadc35a9f7a", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "73a7a345816946d276ad2c46c8bb771de67cfc46", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "24a7b9daa103fa963b3fd37d8805b23e01621976", "status": "affected", "versionType": "git"}, {"version": "d014538aa38561cd24c5eb228223585f26c5ec71", "lessThan": "25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43", "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/hwmon/pmbus/q54sj108a2.c"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.9", "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": "5.11", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.18.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.19.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a0fc1b9c738fba231f190ab960c83202722efee5"}, {"url": "https://git.kernel.org/stable/c/c59090c50f62a17129fc4c5407bc4071305a9e82"}, {"url": "https://git.kernel.org/stable/c/52db5ef163c96f916d424e472fb17aadc35a9f7a"}, {"url": "https://git.kernel.org/stable/c/b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b"}, {"url": "https://git.kernel.org/stable/c/73a7a345816946d276ad2c46c8bb771de67cfc46"}, {"url": "https://git.kernel.org/stable/c/24a7b9daa103fa963b3fd37d8805b23e01621976"}, {"url": "https://git.kernel.org/stable/c/25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43"}], "title": "hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read\n\nThe q54sj108a2_debugfs_read function suffers from a stack buffer overflow\ndue to incorrect arguments passed to bin2hex(). The function currently\npasses 'data' as the destination and 'data_char' as the source.\n\nBecause bin2hex() converts each input byte into two hex characters, a\n32-byte block read results in 64 bytes of output. Since 'data' is only\n34 bytes (I2C_SMBUS_BLOCK_MAX + 2), this writes 30 bytes past the end\nof the buffer onto the stack.\n\nAdditionally, the arguments were swapped: it was reading from the\nzero-initialized 'data_char' and writing to 'data', resulting in\nall-zero output regardless of the actual I2C read.\n\nFix this by:\n1. Expanding 'data_char' to 66 bytes to safely hold the hex output.\n2. Correcting the bin2hex() argument order and using the actual read count.\n3. Using a pointer to select the correct output buffer for the final\n simple_read_from_buffer call."}], "id": "CVE-2026-43380", "lastModified": "2026-05-12T14:10:27.343", "metrics": {}, "published": "2026-05-08T15:16:49.207", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24a7b9daa103fa963b3fd37d8805b23e01621976"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/52db5ef163c96f916d424e472fb17aadc35a9f7a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/73a7a345816946d276ad2c46c8bb771de67cfc46"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a0fc1b9c738fba231f190ab960c83202722efee5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c59090c50f62a17129fc4c5407bc4071305a9e82"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read", "id": "2468245", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468245"}, "csaw": false, "cwe": "CWE-131", "details": ["A flaw was found in the Linux kernel's hwmon subsystem, specifically within the pmbus/q54sj108a2 driver. This vulnerability, a stack buffer overflow, occurs in the q54sj108a2_debugfs_read function due to incorrect arguments passed to the bin2hex() function. This flaw allows data to be written past the end of a buffer onto the stack, potentially leading to a denial of service or arbitrary code execution."], "name": "CVE-2026-43380", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43380\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43380\nhttps://lore.kernel.org/linux-cve-announce/2026050832-CVE-2026-43380-d98b@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,a0fc1b9c738fba231f190ab960c83202722efee5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,c59090c50f62a17129fc4c5407bc4071305a9e82)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,52db5ef163c96f916d424e472fb17aadc35a9f7a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,73a7a345816946d276ad2c46c8bb771de67cfc46)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,24a7b9daa103fa963b3fd37d8805b23e01621976)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d014538aa38561cd24c5eb228223585f26c5ec71,25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43)"}}], "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": "5.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.19,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.9,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-08T16:15:12.710211+00:00", "updated": "2026-05-09T05:00:10.665868+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}