{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-09-18T16:04:18.519Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-18T16:04:18.519Z"}, "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 [<ffffffffadd28087>] __cpu_map_entry_alloc+0xf7/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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 [<ffffffffadd281f0>] __cpu_map_entry_alloc+0x260/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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 [<ffffffffade5db3e>] kvmalloc_node+0x11e/0x170\n [<ffffffffadd28280>] __cpu_map_entry_alloc+0x2f0/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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"}}}}

{}

{"cveTags": [], "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 [<ffffffffadd28087>] __cpu_map_entry_alloc+0xf7/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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 [<ffffffffadd281f0>] __cpu_map_entry_alloc+0x260/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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 [<ffffffffade5db3e>] kvmalloc_node+0x11e/0x170\n [<ffffffffadd28280>] __cpu_map_entry_alloc+0x2f0/0xb00\n [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0\n [<ffffffffadc6d0fd>] bpf_map_update_value.isra.0+0x2bd/0x520\n [<ffffffffadc7349b>] map_update_elem+0x4cb/0x720\n [<ffffffffadc7d983>] __se_sys_bpf+0x8c3/0xb90\n [<ffffffffb029cc80>] do_syscall_64+0x30/0x40\n [<ffffffffb0400099>] 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."}], "id": "CVE-2023-53441", "lastModified": "2025-09-18T16:15:48.353", "metrics": {}, "published": "2025-09-18T16:15:48.353", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4369016497319a9635702da010d02af1ebb1849d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a957ac8e0b5ffb5797382a6adbafd005a5f72851"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b11a9b4f28cb6ff69ef7e69809e5f7fffeac9030"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d26299f50f5ea8f0aeb5d49e659c31f64233c816"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: cpumap: Fix memory leak in cpu_map_update_elem", "id": "2396508", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396508"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53441", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53441\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53441\nhttps://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53441-0641@gregkh/T"], "threat_severity": "Low"}