{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53441", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:54:09.752Z", "datePublished": "2025-09-18T16:04:18.519Z", "dateUpdated": "2026-05-11T19:45:03.854Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:45:03.854Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: cpumap: Fix memory leak in cpu_map_update_elem\n\nSyzkaller reported a memory leak as follows:\n\nBUG: memory leak\nunreferenced object 0xff110001198ef748 (size 192):\n comm \"syz-executor.3\", pid 17672, jiffies 4298118891 (age 9.906s)\n hex dump (first 32 bytes):\n 00 00 00 00 4a 19 00 00 80 ad e3 e4 fe ff c0 00 ....J...........\n 00 b2 d3 0c 01 00 11 ff 28 f5 8e 19 01 00 11 ff ........(.......\n backtrace:\n [] __cpu_map_entry_alloc+0xf7/0xb00\n [] cpu_map_update_elem+0x2fe/0x3d0\n [] bpf_map_update_value.isra.0+0x2bd/0x520\n [] map_update_elem+0x4cb/0x720\n [] __se_sys_bpf+0x8c3/0xb90\n [] do_syscall_64+0x30/0x40\n [] entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nBUG: memory leak\nunreferenced object 0xff110001198ef528 (size 192):\n comm \"syz-executor.3\", pid 17672, jiffies 4298118891 (age 9.906s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [] __cpu_map_entry_alloc+0x260/0xb00\n [] cpu_map_update_elem+0x2fe/0x3d0\n [] bpf_map_update_value.isra.0+0x2bd/0x520\n [] map_update_elem+0x4cb/0x720\n [] __se_sys_bpf+0x8c3/0xb90\n [] do_syscall_64+0x30/0x40\n [] entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nBUG: memory leak\nunreferenced object 0xff1100010fd93d68 (size 8):\n comm \"syz-executor.3\", pid 17672, jiffies 4298118891 (age 9.906s)\n hex dump (first 8 bytes):\n 00 00 00 00 00 00 00 00 ........\n backtrace:\n [] kvmalloc_node+0x11e/0x170\n [] __cpu_map_entry_alloc+0x2f0/0xb00\n [] cpu_map_update_elem+0x2fe/0x3d0\n [] bpf_map_update_value.isra.0+0x2bd/0x520\n [] map_update_elem+0x4cb/0x720\n [] __se_sys_bpf+0x8c3/0xb90\n [] do_syscall_64+0x30/0x40\n [] entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nIn the cpu_map_update_elem flow, when kthread_stop is called before\ncalling the threadfn of rcpu->kthread, since the KTHREAD_SHOULD_STOP bit\nof kthread has been set by kthread_stop, the threadfn of rcpu->kthread\nwill never be executed, and rcpu->refcnt will never be 0, which will\nlead to the allocated rcpu, rcpu->queue and rcpu->queue->queue cannot be\nreleased.\n\nCalling kthread_stop before executing kthread's threadfn will return\n-EINTR. We can complete the release of memory resources in this state." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/bpf/cpumap.c" ], "versions": [ { "version": "6710e1126934d8b4372b4d2f9ae1646cd3f151bf", "lessThan": "d26299f50f5ea8f0aeb5d49e659c31f64233c816", "status": "affected", "versionType": "git" }, { "version": "6710e1126934d8b4372b4d2f9ae1646cd3f151bf", "lessThan": "b11a9b4f28cb6ff69ef7e69809e5f7fffeac9030", "status": "affected", "versionType": "git" }, { "version": "6710e1126934d8b4372b4d2f9ae1646cd3f151bf", "lessThan": "a957ac8e0b5ffb5797382a6adbafd005a5f72851", "status": "affected", "versionType": "git" }, { "version": "6710e1126934d8b4372b4d2f9ae1646cd3f151bf", "lessThan": "4369016497319a9635702da010d02af1ebb1849d", "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/cpumap.c" ], "versions": [ { "version": "4.15", "status": "affected" }, { "version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.40", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.5", "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": "4.15", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.1.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.4.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d26299f50f5ea8f0aeb5d49e659c31f64233c816" }, { "url": "https://git.kernel.org/stable/c/b11a9b4f28cb6ff69ef7e69809e5f7fffeac9030" }, { "url": "https://git.kernel.org/stable/c/a957ac8e0b5ffb5797382a6adbafd005a5f72851" }, { "url": "https://git.kernel.org/stable/c/4369016497319a9635702da010d02af1ebb1849d" } ], "title": "bpf: cpumap: Fix memory leak in cpu_map_update_elem", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53441", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:18:06.942324Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-401", "description": "CWE-401 Missing Release of Memory after Effective Lifetime" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:23:10.911Z" } } ] } }