{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2023-52445","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-20T12:30:33.291Z","datePublished":"2024-02-22T16:21:37.784Z","dateUpdated":"2025-05-04T07:36:41.651Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:36:41.651Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix use after free on context disconnection\n\nUpon module load, a kthread is created targeting the\npvr2_context_thread_func function, which may call pvr2_context_destroy\nand thus call kfree() on the context object. However, that might happen\nbefore the usb hub_event handler is able to notify the driver. This\npatch adds a sanity check before the invalid read reported by syzbot,\nwithin the context disconnection call stack."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/pvrusb2/pvrusb2-context.c"],"versions":[{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"ec36c134dd020d28e312c2f1766f85525e747aab","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"47aa8fcd5e8b5563af4042a00f25ba89bef8f33d","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"3233d8bf7893550045682192cb227af7fa3defeb","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"ec3634ebe23fc3c44ebc67c6d25917300bc68c08","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"30773ea47d41773f9611ffb4ebc9bda9d19a9e7e","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"2cf0005d315549b8d2b940ff96a66c2a889aa795","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"437b5f57732bb4cc32cc9f8895d2010ee9ff521c","status":"affected","versionType":"git"},{"version":"e5be15c63804e05b5a94197524023702a259e308","lessThan":"ded85b0c0edd8f45fec88783d7555a5b982449c1","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/media/usb/pvrusb2/pvrusb2-context.c"],"versions":[{"version":"2.6.26","status":"affected"},{"version":"0","lessThan":"2.6.26","status":"unaffected","versionType":"semver"},{"version":"4.19.306","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.268","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.209","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.148","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.75","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.14","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.2","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","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":"2.6.26","versionEndExcluding":"4.19.306"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"5.4.268"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"5.10.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"5.15.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.1.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.6.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab"},{"url":"https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d"},{"url":"https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb"},{"url":"https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08"},{"url":"https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e"},{"url":"https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795"},{"url":"https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c"},{"url":"https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1"}],"title":"media: 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