CVE-2023-53065

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there is no network-facing path into perf_event_bpf_output.\nAC:L - An attacker who opens the bpf_event with sample_id_all, maps a small ring buffer, stops consuming it to force rb->lost, then loads/unloads a BPF program reliably hits the LOST path that performs the stack overflow; no attacker-uncontrollable race or layout is required.\nPR:L - Opening the required CPU-wide bpf_event needs CAP_PERFMON (perf_allow_cpu), and triggering BPF unload needs CAP_BPF or userns-reachable CAP_NET_ADMIN for tc/cls_bpf; these are delegatable non-root capabilities routinely granted to observability agents/containers, matching established PR:L scoring for CAP_PERFMON/CAP_BPF bugs.\nUI:N - The attacker opens the perf event, fills the ring buffer, and triggers BPF program unload entirely from their own processes; no separate victim action is required.\nS:U - The stack corruption and any resulting privilege escalation occur within the host kernel\u2019s security authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is an attacker-influenced kernel stack out-of-bounds write (perf_bpf_event treated as the much larger perf_sample_data); such memory corruption can be leveraged for arbitrary kernel read primitives.\nI:H - Overflowing past the on-stack perf_bpf_event in perf_event_bpf_event smashes saved frame/return state under attacker-controlled sample_type write patterns, enabling control-flow hijack and arbitrary kernel write/code execution.\nA:H - The same stack-out-of-bounds write KASAN reported causes kernel oops/panic even when not fully weaponized, which is High availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/events/core.c"], "versions": [{"version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "ddcf8320003638a06eb1e46412e045d0c5701575", "status": "affected", "versionType": "git"}, {"version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "ac5f88642cb211152041f84a985309e9af4baf59", "status": "affected", "versionType": "git"}, {"version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "ff8137727a2af4ad5f6e6c8b9f7ec5e8db9da86c", "status": "affected", "versionType": "git"}, {"version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "3a776fddb4e5598c8bfcd4ad094fba34f9856fc9", "status": "affected", "versionType": "git"}, {"version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "eb81a2ed4f52be831c9fb879752d89645a312c13", "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/events/core.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.177", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.105", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.22", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.9", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "5.10", "versionEndExcluding": "5.10.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ddcf8320003638a06eb1e46412e045d0c5701575"}, {"url": "https://git.kernel.org/stable/c/ac5f88642cb211152041f84a985309e9af4baf59"}, {"url": "https://git.kernel.org/stable/c/ff8137727a2af4ad5f6e6c8b9f7ec5e8db9da86c"}, {"url": "https://git.kernel.org/stable/c/3a776fddb4e5598c8bfcd4ad094fba34f9856fc9"}, {"url": "https://git.kernel.org/stable/c/eb81a2ed4f52be831c9fb879752d89645a312c13"}], "title": "perf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-53065", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:33:16.858406Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:25.473Z"}}]}}

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perf_event_bpf_output.\nAC:L - An attacker who opens the bpf_event with sample_id_all, maps a small ring buffer, stops consuming it to force rb->lost, then loads/unloads a BPF program reliably hits the LOST path that performs the stack overflow; no attacker-uncontrollable race or layout is required.\nPR:L - Opening the required CPU-wide bpf_event needs CAP_PERFMON (perf_allow_cpu), and triggering BPF unload needs CAP_BPF or userns-reachable CAP_NET_ADMIN for tc/cls_bpf; these are delegatable non-root capabilities routinely granted to observability agents/containers, matching established PR:L scoring for CAP_PERFMON/CAP_BPF bugs.\nUI:N - The attacker opens the perf event, fills the ring buffer, and triggers BPF program unload entirely from their own processes; no separate victim action is required.\nS:U - The stack corruption and any resulting privilege escalation occur within the host kernel\u2019s security authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is an attacker-influenced kernel stack out-of-bounds write (perf_bpf_event treated as the much larger perf_sample_data); such memory corruption can be leveraged for arbitrary kernel read primitives.\nI:H - Overflowing past the on-stack perf_bpf_event in perf_event_bpf_event smashes saved frame/return state under attacker-controlled sample_type write patterns, enabling control-flow hijack and arbitrary kernel write/code execution.\nA:H - The same stack-out-of-bounds write KASAN reported causes kernel oops/panic even when not fully weaponized, which is High availability impact."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": "ddcf8320003638a06eb1e46412e045d0c5701575", "versionType": "git"}, {"status": "affected", "version": "267fb27352b6fc9fdbad753127a239f75618ecbc", "lessThan": 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vulnerability has been resolved:\n\nperf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output\n\nsyzkaller reportes a KASAN issue with stack-out-of-bounds.\nThe call trace is as follows:\n dump_stack+0x9c/0xd3\n print_address_description.constprop.0+0x19/0x170\n __kasan_report.cold+0x6c/0x84\n kasan_report+0x3a/0x50\n __perf_event_header__init_id+0x34/0x290\n perf_event_header__init_id+0x48/0x60\n perf_output_begin+0x4a4/0x560\n perf_event_bpf_output+0x161/0x1e0\n perf_iterate_sb_cpu+0x29e/0x340\n perf_iterate_sb+0x4c/0xc0\n perf_event_bpf_event+0x194/0x2c0\n __bpf_prog_put.constprop.0+0x55/0xf0\n __cls_bpf_delete_prog+0xea/0x120 [cls_bpf]\n cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf]\n process_one_work+0x3c2/0x730\n worker_thread+0x93/0x650\n kthread+0x1b8/0x210\n ret_from_fork+0x1f/0x30\n\ncommit 267fb27352b6 (\"perf: Reduce stack usage of perf_output_begin()\")\nuse on-stack struct perf_sample_data of the caller function.\n\nHowever, perf_event_bpf_output uses incorrect parameter to convert\nsmall-sized data (struct perf_bpf_event) into large-sized data\n(struct perf_sample_data), which causes memory overwriting occurs in\n__perf_event_header__init_id."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/core: Se solucion\u00f3 que el par\u00e1metro perf_output_begin se invocara incorrectamente en perf_event_bpf_output syzkaller informa un problema de KASAN con una pila fuera de los l\u00edmites. El seguimiento de la llamada es el siguiente: dump_stack+0x9c/0xd3 print_address_description.constprop.0+0x19/0x170 __kasan_report.cold+0x6c/0x84 kasan_report+0x3a/0x50 __perf_event_header__init_id+0x34/0x290 perf_event_header__init_id+0x48/0x60 perf_output_begin+0x4a4/0x560 perf_event_bpf_output+0x161/0x1e0 perf_iterate_sb_cpu+0x29e/0x340 perf_iterate_sb+0x4c/0xc0 perf_event_bpf_event+0x194/0x2c0 __bpf_prog_put.constprop.0+0x55/0xf0 __cls_bpf_delete_prog+0xea/0x120 [cls_bpf] cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf] process_one_work+0x3c2/0x730 workers_thread+0x93/0x650 kthread+0x1b8/0x210 ret_from_fork+0x1f/0x30 commit 267fb27352b6 (\"perf: Reducir el uso de la pila de perf_output_begin()\") usa la estructura en pila perf_sample_data de la funci\u00f3n que llama. Sin embargo, perf_event_bpf_output utiliza un par\u00e1metro incorrecto para convertir datos de tama\u00f1o peque\u00f1o (struct perf_bpf_event) en datos de tama\u00f1o grande (struct perf_sample_data), lo que provoca que se sobrescriba la memoria en __perf_event_header__init_id."}], "id": "CVE-2023-53065", "lastModified": "2026-10-15T22:17:35.960", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53065", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:33:16.858406Z", "version": "2.0.3"}}]}, "published": "2025-05-02T16:15:25.580", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a776fddb4e5598c8bfcd4ad094fba34f9856fc9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac5f88642cb211152041f84a985309e9af4baf59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ddcf8320003638a06eb1e46412e045d0c5701575"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb81a2ed4f52be831c9fb879752d89645a312c13"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ff8137727a2af4ad5f6e6c8b9f7ec5e8db9da86c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2023:6583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}], "bugzilla": {"description": "kernel: perf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output", "id": "2363704", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363704"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nperf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output\nsyzkaller reportes a KASAN issue with stack-out-of-bounds.\nThe call trace is as follows:\ndump_stack+0x9c/0xd3\nprint_address_description.constprop.0+0x19/0x170\n__kasan_report.cold+0x6c/0x84\nkasan_report+0x3a/0x50\n__perf_event_header__init_id+0x34/0x290\nperf_event_header__init_id+0x48/0x60\nperf_output_begin+0x4a4/0x560\nperf_event_bpf_output+0x161/0x1e0\nperf_iterate_sb_cpu+0x29e/0x340\nperf_iterate_sb+0x4c/0xc0\nperf_event_bpf_event+0x194/0x2c0\n__bpf_prog_put.constprop.0+0x55/0xf0\n__cls_bpf_delete_prog+0xea/0x120 [cls_bpf]\ncls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf]\nprocess_one_work+0x3c2/0x730\nworker_thread+0x93/0x650\nkthread+0x1b8/0x210\nret_from_fork+0x1f/0x30\ncommit 267fb27352b6 (\"perf: Reduce stack usage of perf_output_begin()\")\nuse on-stack struct perf_sample_data of the caller function.\nHowever, perf_event_bpf_output uses incorrect parameter to convert\nsmall-sized data (struct perf_bpf_event) into large-sized data\n(struct perf_sample_data), which causes memory overwriting occurs in\n__perf_event_header__init_id."], "name": "CVE-2023-53065", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53065\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53065\nhttps://lore.kernel.org/linux-cve-announce/2025050211-CVE-2023-53065-0292@gregkh/T"], "threat_severity": "Moderate"}

{}