{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53543","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-04T15:14:15.920Z","datePublished":"2025-10-04T15:16:52.114Z","dateUpdated":"2026-05-11T19:47:00.361Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:47:00.361Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check\n\nThe vdpa_nl_policy structure is used to validate the nlattr when parsing\nthe incoming nlmsg. It will ensure the attribute being described produces\na valid nlattr pointer in info->attrs before entering into each handler\nin vdpa_nl_ops.\n\nThat is to say, the missing part in vdpa_nl_policy may lead to illegal\nnlattr after parsing, which could lead to OOB read just like CVE-2023-3773.\n\nThis patch adds the missing nla_policy for vdpa max vqp attr to avoid\nsuch bugs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vdpa/vdpa.c"],"versions":[{"version":"ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a","lessThan":"ff71709445ac033e6e250d971683110e4781c068","status":"affected","versionType":"git"},{"version":"ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a","lessThan":"ea65e8b5e6b1a34deda7564f09c90e9e80db436a","status":"affected","versionType":"git"},{"version":"ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a","lessThan":"5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f","status":"affected","versionType":"git"},{"version":"447092100c7e71aa20469a270fcee441d807ed58","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/vdpa/vdpa.c"],"versions":[{"version":"5.16","status":"affected"},{"version":"0","lessThan":"5.16","status":"unaffected","versionType":"semver"},{"version":"6.1.47","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.4.12","lessThanOrEqual":"6.4.*","status":"unaffected","versionType":"semver"},{"version":"6.5","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":"5.16","versionEndExcluding":"6.1.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.4.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.198"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ff71709445ac033e6e250d971683110e4781c068"},{"url":"https://git.kernel.org/stable/c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a"},{"url":"https://git.kernel.org/stable/c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f"}],"title":"vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check","x_generator":{"engine":"bippy-1.2.0"}}}}