{"id":"CVE-2025-68744","state":"PUBLISHED","title":"bpf: Free special fields when update [lru_,]percpu_hash maps","description":"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()'.","publishedAt":"2025-12-24T12:09:40.839Z","updatedAt":"2026-05-11T21:52:30.476Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"994d6303ed0b84cbc795bb5becf7ed6de40d3f3c","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"3bf1378747e251571e0de15e7e0a6bf2919044e7","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"96a5cb7072cabbac5c66ac9318242c3bdceebb68","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"4a03d69cece145e4fb527464be29c3806aa3221e","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"6af6e49a76c9af7d42eb923703e7648cb2bf401a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.63","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"]}],"references":["https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c","https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7","https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68","https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e","https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68744.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68744","state":"PUBLISHED","datePublished":"2025-12-24T12:09:40.839Z","dateUpdated":"2026-05-11T21:52:30.476Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.031Z"},"containers":{"cna":{"title":"bpf: Free special fields when update [lru_,]percpu_hash maps","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"994d6303ed0b84cbc795bb5becf7ed6de40d3f3c","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"3bf1378747e251571e0de15e7e0a6bf2919044e7","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"96a5cb7072cabbac5c66ac9318242c3bdceebb68","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"4a03d69cece145e4fb527464be29c3806aa3221e","versionType":"git"},{"version":"65334e64a493c6a0976de7ad56bf8b7a9ff04b4a","status":"affected","lessThan":"6af6e49a76c9af7d42eb923703e7648cb2bf401a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.63","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/hashtab.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:52:30.476Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}