{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47248","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-04-10T18:59:19.536Z","datePublished":"2024-05-21T14:19:45.588Z","dateUpdated":"2025-05-04T07:07:06.760Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:07:06.760Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix race between close() and udp_abort()\n\nKaustubh reported and diagnosed a panic in udp_lib_lookup().\nThe root cause is udp_abort() racing with close(). Both\nracing functions acquire the socket lock, but udp{v6}_destroy_sock()\nrelease it before performing destructive actions.\n\nWe can't easily extend the socket lock scope to avoid the race,\ninstead use the SOCK_DEAD flag to prevent udp_abort from doing\nany action when the critical race happens.\n\nDiagnosed-and-tested-by: Kaustubh Pandey <kapandey@codeaurora.org>"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp.c","net/ipv6/udp.c"],"versions":[{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"e3c36c773aed0fef8b1d3d555b43393ec564400f","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"a0882f68f54f7a8b6308261acee9bd4faab5a69e","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"2f73448041bd0682d4b552cfd314ace66107f1ad","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"5a88477c1c85e4baa51e91f2d40f2166235daa56","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"8729ec8a2238152a4afc212a331a6cd2c61aeeac","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"65310b0aff86980a011c7c7bfa487a333d4ca241","status":"affected","versionType":"git"},{"version":"5d77dca82839ef016a93ad7acd7058b14d967752","lessThan":"a8b897c7bcd47f4147d066e22cc01d1026d7640e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp.c","net/ipv6/udp.c"],"versions":[{"version":"4.9","status":"affected"},{"version":"0","lessThan":"4.9","status":"unaffected","versionType":"semver"},{"version":"4.9.274","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.238","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.196","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.128","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.46","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.13","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"4.9","versionEndExcluding":"4.9.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"4.14.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"4.19.196"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.4.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.12.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e3c36c773aed0fef8b1d3d555b43393ec564400f"},{"url":"https://git.kernel.org/stable/c/a0882f68f54f7a8b6308261acee9bd4faab5a69e"},{"url":"https://git.kernel.org/stable/c/2f73448041bd0682d4b552cfd314ace66107f1ad"},{"url":"https://git.kernel.org/stable/c/5a88477c1c85e4baa51e91f2d40f2166235daa56"},{"url":"https://git.kernel.org/stable/c/8729ec8a2238152a4afc212a331a6cd2c61aeeac"},{"url":"https://git.kernel.org/stable/c/65310b0aff86980a011c7c7bfa487a333d4ca241"},{"url":"https://git.kernel.org/stable/c/a8b897c7bcd47f4147d066e22cc01d1026d7640e"}],"title":"udp: 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