{"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    [<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"}},"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"}}]}}