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Within binder, a thread may initiate a\ncommand via BINDER_WRITE_READ without a read buffer and then make use\nof epoll_wait() or similar to consume any responses afterwards.\n\nIt is then crucial that epoll threads are signaled via wakeup when they\nqueue their own work. Otherwise, they risk waiting indefinitely for an\nevent leaving their work unhandled. What is worse, subsequent commands\nwon't trigger a wakeup either as the thread has pending work."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: carpeta: se\u00f1al de epoll de subprocesos de autotrabajo En el modo (e)poll, los subprocesos a menudo dependen de eventos de E/S para determinar cu\u00e1ndo los datos est\u00e1n listos para el consumo. Dentro de Binder, un hilo puede iniciar un comando a trav\u00e9s de BINDER_WRITE_READ sin un b\u00fafer de lectura y luego hacer uso de epoll_wait() o similar para consumir cualquier respuesta posterior. Entonces es crucial que los subprocesos de epoll sean se\u00f1alizados mediante activaci\u00f3n cuando ponen en cola su propio trabajo. De lo contrario, corren el riesgo de esperar indefinidamente a que ocurra un evento que deje su trabajo sin gestionar. Lo que es peor, los comandos posteriores tampoco activar\u00e1n una reactivaci\u00f3n ya que el hilo tiene trabajo pendiente."}], "id": "CVE-2024-26606", "lastModified": "2024-11-21T09:02:38.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-02-26T16:28:00.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd64bb8329ce0ea27bc557e4160c2688835402ac"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd64bb8329ce0ea27bc557e4160c2688835402ac"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: signal epoll threads of self-work", "id": "2266286", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2266286"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbinder: signal epoll threads of self-work\nIn (e)poll mode, threads often depend on I/O events to determine when\ndata is ready for consumption. Within binder, a thread may initiate a\ncommand via BINDER_WRITE_READ without a read buffer and then make use\nof epoll_wait() or similar to consume any responses afterwards.\nIt is then crucial that epoll threads are signaled via wakeup when they\nqueue their own work. Otherwise, they risk waiting indefinitely for an\nevent leaving their work unhandled. What is worse, subsequent commands\nwon't trigger a wakeup either as the thread has pending work.", "A flaw was found in the Linux kernel. This issue is in the binder subsystem."], "name": "CVE-2024-26606", "package_state": [{"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26606\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26606\nhttps://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61\nhttps://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc\nhttps://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769\nhttps://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69\nhttps://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7\nhttps://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc\nhttps://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68\nhttps://git.kernel.org/stable/c/dd64bb8329ce0ea27bc557e4160c2688835402ac"], "statement": "Red Hat Enterprise Linux 9 and 8 are not affected by this vulnerability.", "threat_severity": "Low"}