CVE-2022-49548

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/trampoline.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7f845de2863334bed4f362e95853f5e7bc323737", "status": "affected", "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b", "versionType": "git"}, {"lessThan": "e36452d5da6325df7c10cffc60a9e68d21e2606d", "status": "affected", "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b", "versionType": "git"}, {"lessThan": "32c4559c61652f24c9fdd5440342196fe37453bc", "status": "affected", "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b", "versionType": "git"}, {"lessThan": "4f8897bcc20b9ae44758e0572538d741ab66f0dc", "status": "affected", "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b", "versionType": "git"}, {"lessThan": "a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d", "status": "affected", "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/trampoline.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.120", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.45", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.13", "versionType": "semver"}, {"lessThanOrEqual": "5.18.*", "status": "unaffected", "version": "5.18.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "78702CD4-AEE5-45F6-90C7-1EB25AF09D08", "versionEndExcluding": "5.10.120", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "08D699AD-F4CE-4BDD-A97E-4997299C7712", "versionEndExcluding": "5.15.45", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "192FC54B-5367-49D6-B410-0285F14665B1", "versionEndExcluding": "5.17.13", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9FF255A1-64F4-4E31-AF44-C92FB8773BA2", "versionEndExcluding": "5.18.2", "versionStartIncluding": "5.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\n\nThe cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\n\nWhen this happens, the assignment '*progs++ = aux->prog' in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrige un posible desbordamiento de matriz en bpf_trampoline_get_progs() El valor cnt en la comprobaci\u00f3n 'cnt >= BPF_MAX_TRAMP_PROGS' no incluye programas bpf BPF_TRAMP_MODIFY_RETURN, por lo que la cantidad de programas bpf BPF_TRAMP_MODIFY_RETURN adjuntos en un trampol\u00edn puede superar a BPF_MAX_TRAMP_PROGS. Cuando esto sucede, la asignaci\u00f3n '*progs++ = aux->prog' en bpf_trampoline_get_progs() provocar\u00e1 un desbordamiento de la matriz progs, ya que el campo progs en la estructura bpf_tramp_progs solo puede contener como m\u00e1ximo programas bpf BPF_MAX_TRAMP_PROGS."}], "id": "CVE-2022-49548", "lastModified": "2026-06-17T05:18:24.830", "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": "nvd@nist.gov", "type": "Primary"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49548", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T19:37:25.966700Z", "version": "2.0.3"}}]}, "published": "2025-02-26T07:01:30.683", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/32c4559c61652f24c9fdd5440342196fe37453bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4f8897bcc20b9ae44758e0572538d741ab66f0dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7f845de2863334bed4f362e95853f5e7bc323737"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e36452d5da6325df7c10cffc60a9e68d21e2606d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-129"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:2458", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf: Fix potential array overflow in bpf_trampoline_get_progs()", "id": "2347871", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347871"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-129", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\nThe cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\nWhen this happens, the assignment '*progs++ = aux->prog' in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs."], "name": "CVE-2022-49548", "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": "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": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49548\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49548\nhttps://lore.kernel.org/linux-cve-announce/2025022615-CVE-2022-49548-47fe@gregkh/T"], "statement": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\nFor the Red Hat Enterprise Linux 9 to confirm the current state, inspect the sysctl with the command:\ncat /proc/sys/kernel/unprivileged_bpf_disabled\nThe setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw.", "threat_severity": "Moderate"}

{}