CVE-2024-44998

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ATM VCs are switched WAN circuits (DSL/backhaul), and via br2684/pppoatm they carry ordinary internet traffic, so the attacker set extends beyond a single shared segment.\nAC:L - The attacker fully controls both the packet size (choosing the single-skb reassembly branch) and the encapsulation header that forces br2684_push()/pppoatm_push() down their `kfree_skb()` error path, making the use-after-free deterministic on a single packet with no race to win.\nPR:N - No authentication or authorization exists anywhere on this path \u2014 the skb is freed and then re-dereferenced inside the driver's hardirq receive handler, long before any application-level credential check.\nUI:N - The vulnerable code runs automatically on packet reception; no local user must open, mount, or interact with anything for the attacker's frame to be processed.\nS:U - The freed sk_buff and the corrupted buffer-management state are both kernel resources managed by the same security authority; no VM, IOMMU, or 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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: idt77252: evitar use after free en dequeue_rx() No podemos desreferenciar \"skb\" despu\u00e9s de llamar a vcc->push() porque skb est\u00e1 liberado."}], "id": "CVE-2024-44998", "lastModified": "2026-08-04T11:20:08.930", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "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-2024-44998", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-04T20:19:05.283493Z", "version": "2.0.3"}}]}, "published": "2024-09-04T20:15:08.520", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/09e086a5f72ea27c758b3f3b419a69000c32adc1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1cece837e387c039225f19028df255df87a97c0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/24cf390a5426aac9255205e9533cdd7b4235d518"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/379a6a326514a3e2f71b674091dfb0e0e7522b55"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/628ea82190a678a56d2ec38cda3addf3b3a6248d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91b4850e7165a4b7180ef1e227733bcb41ccdf10"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a9a18e8f770c9b0703dab93580d0b02e199a4c79"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ef23c18ab88e33ce000d06a5c6aad0620f219bfd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: atm: idt77252: prevent use after free in dequeue_rx()", "id": "2309861", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2309861"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\natm: idt77252: prevent use after free in dequeue_rx()\nWe can't dereference \"skb\" after calling vcc->push() because the skb\nis released."], "name": "CVE-2024-44998", "package_state": [{"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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-09-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-44998\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-44998\nhttps://lore.kernel.org/linux-cve-announce/2024090449-CVE-2024-44998-6505@gregkh/T"], "threat_severity": "Moderate"}

{}