CVE-2026-93159

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93159", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.089Z", "datePublished": "2026-09-17T16:11:53.852Z", "dateUpdated": "2026-10-19T09:06:31.352Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:06:31.352Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: atmel-sha204a - fix heap info leak on I2C transfer failure\n\nThe nonblocking RNG path allocates a work_data structure to track the\nstate of an in-flight asynchronous I2C request. This pointer is stored\nin rng->priv and later consumed by the read path once the transaction\ncompletes.\n\nIf the underlying I2C transfer fails, the completion callback is invoked\nwith a non-zero status. In this case, the allocated work_data is not\nusable for producing RNG output and must not remain associated with the\nhwrng state.\n\nPreviously, the failure path only logged a warning but left the pointer\nstate uncleared, which can result in subsequent read attempts observing\nstale state and interpreting it as valid completion data.\n\nFix this by freeing the pending work_data. The I2C transaction reports\nan error. This ensures that failed requests do not leave residual state\nbehind that could be interpreted as valid RNG data on later reads.\nClearing rng->priv is done at the subsequent call to nonblocking read."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/atmel-sha204a.c"], "versions": [{"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "a430b5b6d2ddd2b266330f8507a655be1148347d", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "4e76d85e505b7451925efbcd67c015e8c2440c68", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "bcac9052e19490231ff6e0678a06bd2fcf8db3af", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "28cc179252347718f97045dd5ea74165609dbd7d", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "0d6db386133d9230befb77967bbf130443964860", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "f4d347fb1309b69ea6f817a17e6b2893c8d754b7", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "94abda77b57a35b82bba0365bad072d94d67ffe9", "status": "affected", "versionType": "git"}, {"version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "lessThan": "72bbf11ba14bd7d5fbf31a1ec42fff608b657f74", "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/crypto/atmel-sha204a.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.3", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a430b5b6d2ddd2b266330f8507a655be1148347d"}, {"url": "https://git.kernel.org/stable/c/4e76d85e505b7451925efbcd67c015e8c2440c68"}, {"url": "https://git.kernel.org/stable/c/bcac9052e19490231ff6e0678a06bd2fcf8db3af"}, {"url": "https://git.kernel.org/stable/c/28cc179252347718f97045dd5ea74165609dbd7d"}, {"url": "https://git.kernel.org/stable/c/0d6db386133d9230befb77967bbf130443964860"}, {"url": "https://git.kernel.org/stable/c/f4d347fb1309b69ea6f817a17e6b2893c8d754b7"}, {"url": "https://git.kernel.org/stable/c/94abda77b57a35b82bba0365bad072d94d67ffe9"}, {"url": "https://git.kernel.org/stable/c/72bbf11ba14bd7d5fbf31a1ec42fff608b657f74"}], "title": "crypto: atmel-sha204a - fix heap info leak on I2C transfer failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/atmel-sha204a.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a430b5b6d2ddd2b266330f8507a655be1148347d", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "4e76d85e505b7451925efbcd67c015e8c2440c68", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "bcac9052e19490231ff6e0678a06bd2fcf8db3af", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "28cc179252347718f97045dd5ea74165609dbd7d", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "0d6db386133d9230befb77967bbf130443964860", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "f4d347fb1309b69ea6f817a17e6b2893c8d754b7", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "94abda77b57a35b82bba0365bad072d94d67ffe9", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}, {"lessThan": "72bbf11ba14bd7d5fbf31a1ec42fff608b657f74", "status": "affected", "version": "da001fb651b00e1deeaf24767dd691ae8152a4f5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/atmel-sha204a.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: atmel-sha204a - fix heap info leak on I2C transfer failure\n\nThe nonblocking RNG path allocates a work_data structure to track the\nstate of an in-flight asynchronous I2C request. This pointer is stored\nin rng->priv and later consumed by the read path once the transaction\ncompletes.\n\nIf the underlying I2C transfer fails, the completion callback is invoked\nwith a non-zero status. In this case, the allocated work_data is not\nusable for producing RNG output and must not remain associated with the\nhwrng state.\n\nPreviously, the failure path only logged a warning but left the pointer\nstate uncleared, which can result in subsequent read attempts observing\nstale state and interpreting it as valid completion data.\n\nFix this by freeing the pending work_data. The I2C transaction reports\nan error. This ensures that failed requests do not leave residual state\nbehind that could be interpreted as valid RNG data on later reads.\nClearing rng->priv is done at the subsequent call to nonblocking read."}], "id": "CVE-2026-93159", "lastModified": "2026-10-19T10:17:06.123", "metrics": {}, "published": "2026-09-17T17:18:11.277", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d6db386133d9230befb77967bbf130443964860"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/28cc179252347718f97045dd5ea74165609dbd7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e76d85e505b7451925efbcd67c015e8c2440c68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72bbf11ba14bd7d5fbf31a1ec42fff608b657f74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/94abda77b57a35b82bba0365bad072d94d67ffe9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a430b5b6d2ddd2b266330f8507a655be1148347d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bcac9052e19490231ff6e0678a06bd2fcf8db3af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4d347fb1309b69ea6f817a17e6b2893c8d754b7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: crypto: atmel-sha204a - fix heap info leak on I2C transfer failure", "id": "2536807", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536807"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["A flaw was found in the `atmel-sha204a` cryptographic hardware random number generator (HWRNG) driver in the Linux kernel. When an Inter-Integrated Circuit (I2C) transfer fails, the driver does not properly clear a pointer to allocated work data. This oversight can lead to subsequent read attempts observing stale data, potentially resulting in an information leak where sensitive heap memory contents could be exposed."], "name": "CVE-2026-93159", "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:10", "fix_state": "Not affected", "package_name": "kernel-rt", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93159\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93159\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93159.mbox"], "threat_severity": "Moderate"}

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