{"id":"CVE-2026-45838","state":"PUBLISHED","title":"bpf: fix end-of-list detection in cgroup_storage_get_next_key()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix end-of-list detection in cgroup_storage_get_next_key()\n\nlist_next_entry() never returns NULL -- when the current element is the\nlast entry it wraps to the list head via container_of(). The subsequent\nNULL check is therefore dead code and get_next_key() never returns\n-ENOENT for the last element, instead reading storage->key from a bogus\npointer that aliases internal map fields and copying the result to\nuserspace.\n\nReplace it with list_entry_is_head() so the function correctly returns\n-ENOENT when there are no more entries.","publishedAt":"2026-05-27T09:24:36.561Z","updatedAt":"2026-10-15T01:19:40.227Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"0f3d9dd5e1fd52b39e25328307c6a694e994ffe3","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"26d3339e465e54107bd85884341d1609c5300d6a","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"b4b5a20bed82130da2f2818f04d52378952fbd0b","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"85a2f30e40f7468db732f55659bc6318874f49af","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"32ce55d424395904986f5066f8755f6cb9993377","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"fc39753b7f92e09177777e9c648afe5aa3abb81f","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"5828b9e5b272ecff7cf5d345128d3de7324117f7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/local_storage.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/local_storage.c"]}],"references":["https://git.kernel.org/stable/c/0f3d9dd5e1fd52b39e25328307c6a694e994ffe3","https://git.kernel.org/stable/c/26d3339e465e54107bd85884341d1609c5300d6a","https://git.kernel.org/stable/c/2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6","https://git.kernel.org/stable/c/b4b5a20bed82130da2f2818f04d52378952fbd0b","https://git.kernel.org/stable/c/85a2f30e40f7468db732f55659bc6318874f49af","https://git.kernel.org/stable/c/32ce55d424395904986f5066f8755f6cb9993377","https://git.kernel.org/stable/c/fc39753b7f92e09177777e9c648afe5aa3abb81f","https://git.kernel.org/stable/c/5828b9e5b272ecff7cf5d345128d3de7324117f7","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45838.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45838","state":"PUBLISHED","datePublished":"2026-05-27T09:24:36.561Z","dateUpdated":"2026-10-15T01:19:40.227Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.077Z"},"containers":{"cna":{"title":"bpf: fix end-of-list detection in cgroup_storage_get_next_key()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix end-of-list detection in cgroup_storage_get_next_key()\n\nlist_next_entry() never returns NULL -- when the current element is the\nlast entry it wraps to the list head via container_of(). The subsequent\nNULL check is therefore dead code and get_next_key() never returns\n-ENOENT for the last element, instead reading storage->key from a bogus\npointer that aliases internal map fields and copying the result to\nuserspace.\n\nReplace it with list_entry_is_head() so the function correctly returns\n-ENOENT when there are no more entries."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"0f3d9dd5e1fd52b39e25328307c6a694e994ffe3","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"26d3339e465e54107bd85884341d1609c5300d6a","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"b4b5a20bed82130da2f2818f04d52378952fbd0b","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"85a2f30e40f7468db732f55659bc6318874f49af","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"32ce55d424395904986f5066f8755f6cb9993377","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"fc39753b7f92e09177777e9c648afe5aa3abb81f","versionType":"git"},{"version":"de9cbbaadba5adf88a19e46df61f7054000838f6","status":"affected","lessThan":"5828b9e5b272ecff7cf5d345128d3de7324117f7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/local_storage.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/local_storage.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0f3d9dd5e1fd52b39e25328307c6a694e994ffe3"},{"url":"https://git.kernel.org/stable/c/26d3339e465e54107bd85884341d1609c5300d6a"},{"url":"https://git.kernel.org/stable/c/2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6"},{"url":"https://git.kernel.org/stable/c/b4b5a20bed82130da2f2818f04d52378952fbd0b"},{"url":"https://git.kernel.org/stable/c/85a2f30e40f7468db732f55659bc6318874f49af"},{"url":"https://git.kernel.org/stable/c/32ce55d424395904986f5066f8755f6cb9993377"},{"url":"https://git.kernel.org/stable/c/fc39753b7f92e09177777e9c648afe5aa3abb81f"},{"url":"https://git.kernel.org/stable/c/5828b9e5b272ecff7cf5d345128d3de7324117f7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:46:05.613Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:19:40.227Z"},"x_adpType":"supplier"}]}}}