{"id":"CVE-2026-93159","summary":"crypto: atmel-sha204a - fix heap info leak on I2C transfer failure","details":"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-\u003epriv 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-\u003epriv is done at the subsequent call to nonblocking read.","modified":"2026-09-19T03:47:22.784205902Z","published":"2026-09-17T16:11:53.852Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93159.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d6db386133d9230befb77967bbf130443964860"},{"type":"WEB","url":"https://git.kernel.org/stable/c/28cc179252347718f97045dd5ea74165609dbd7d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4e76d85e505b7451925efbcd67c015e8c2440c68"},{"type":"WEB","url":"https://git.kernel.org/stable/c/72bbf11ba14bd7d5fbf31a1ec42fff608b657f74"},{"type":"WEB","url":"https://git.kernel.org/stable/c/94abda77b57a35b82bba0365bad072d94d67ffe9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a430b5b6d2ddd2b266330f8507a655be1148347d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bcac9052e19490231ff6e0678a06bd2fcf8db3af"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f4d347fb1309b69ea6f817a17e6b2893c8d754b7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93159.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93159"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"da001fb651b00e1deeaf24767dd691ae8152a4f5"},{"fixed":"a430b5b6d2ddd2b266330f8507a655be1148347d"},{"fixed":"4e76d85e505b7451925efbcd67c015e8c2440c68"},{"fixed":"bcac9052e19490231ff6e0678a06bd2fcf8db3af"},{"fixed":"28cc179252347718f97045dd5ea74165609dbd7d"},{"fixed":"0d6db386133d9230befb77967bbf130443964860"},{"fixed":"f4d347fb1309b69ea6f817a17e6b2893c8d754b7"},{"fixed":"94abda77b57a35b82bba0365bad072d94d67ffe9"},{"fixed":"72bbf11ba14bd7d5fbf31a1ec42fff608b657f74"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93159.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93159.json"}}],"schema_version":"1.9.0"}