{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68744","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T10:30:51.031Z","datePublished":"2025-12-24T12:09:40.839Z","dateUpdated":"2026-05-11T21:52:30.476Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:52:30.476Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Free special fields when update [lru_,]percpu_hash maps\n\nAs [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing\ncalls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the\nmemory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the\nmap gets freed.\n\nFix this by calling 'bpf_obj_free_fields()' after\n'copy_map_value[,_long]()' in 'pcpu_copy_value()'."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"],"versions":[{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","lessThan":"994d6303ed0b84cbc795bb5becf7ed6de40d3f3c","status":"affected","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","lessThan":"3bf1378747e251571e0de15e7e0a6bf2919044e7","status":"affected","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","lessThan":"96a5cb7072cabbac5c66ac9318242c3bdceebb68","status":"affected","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","lessThan":"4a03d69cece145e4fb527464be29c3806aa3221e","status":"affected","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","lessThan":"6af6e49a76c9af7d42eb923703e7648cb2bf401a","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.120","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.63","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.13","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18.2","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"6.4","versionEndExcluding":"6.6.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.17.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c"},{"url":"https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7"},{"url":"https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68"},{"url":"https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e"},{"url":"https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a"}],"title":"bpf: Free special fields when update [lru_,]percpu_hash maps","x_generator":{"engine":"bippy-1.2.0"}}}}