CVE-2022-49379

{"id": "CVE-2022-49379", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:14.543", "references": [{"url": "https://git.kernel.org/stable/c/29357883a89193863f3cc6a2c5e0b42ceb022761", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4ad6af07efcca85369c21e4897b3020cff2c170b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/528229474e1cbb1b3451cb713d94aecb5f6ee264", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5ee76c256e928455212ab759c51d198fedbe7523", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/71cbce75031aed26c72c2dc8a83111d181685f1b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-667"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: Fix wait_for_device_probe() & deferred_probe_timeout interaction\n\nMounting NFS rootfs was timing out when deferred_probe_timeout was\nnon-zero [1]. This was because ip_auto_config() initcall times out\nwaiting for the network interfaces to show up when\ndeferred_probe_timeout was non-zero. While ip_auto_config() calls\nwait_for_device_probe() to make sure any currently running deferred\nprobe work or asynchronous probe finishes, that wasn't sufficient to\naccount for devices being deferred until deferred_probe_timeout.\n\nCommit 35a672363ab3 (\"driver core: Ensure wait_for_device_probe() waits\nuntil the deferred_probe_timeout fires\") tried to fix that by making\nsure wait_for_device_probe() waits for deferred_probe_timeout to expire\nbefore returning.\n\nHowever, if wait_for_device_probe() is called from the kernel_init()\ncontext:\n\n- Before deferred_probe_initcall() [2], it causes the boot process to\n hang due to a deadlock.\n\n- After deferred_probe_initcall() [3], it blocks kernel_init() from\n continuing till deferred_probe_timeout expires and beats the point of\n deferred_probe_timeout that's trying to wait for userspace to load\n modules.\n\nNeither of this is good. So revert the changes to\nwait_for_device_probe().\n\n[1] - https://lore.kernel.org/lkml/TYAPR01MB45443DF63B9EF29054F7C41FD8C60@TYAPR01MB4544.jpnprd01.prod.outlook.com/\n[2] - https://lore.kernel.org/lkml/YowHNo4sBjr9ijZr@dev-arch.thelio-3990X/\n[3] - https://lore.kernel.org/lkml/Yo3WvGnNk3LvLb7R@linutronix.de/"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: n\u00facleo del controlador: se corrige la interacci\u00f3n wait_for_device_probe() y deferred_probe_timeout El montaje de rootfs NFS se agotaba cuando deferred_probe_timeout no era cero [1]. Esto se deb\u00eda a que la llamada de inicio ip_auto_config() agotaba el tiempo de espera a que aparecieran las interfaces de red cuando deferred_probe_timeout no era cero. Si bien ip_auto_config() llama a wait_for_device_probe() para asegurarse de que cualquier sonda diferida que se est\u00e9 ejecutando actualmente funcione o la sonda asincr\u00f3nica finalice, eso no era suficiente para explicar los dispositivos que se aplazaban hasta deferred_probe_timeout. El commit 35a672363ab3 (\"driver core: Ensure wait_for_device_probe() waits Until the deferred_probe_timeout fires\") intent\u00f3 solucionar eso asegur\u00e1ndose de que wait_for_device_probe() espere a que deferred_probe_timeout expire antes de regresar. Sin embargo, si wait_for_device_probe() se llama desde el contexto kernel_init(): - Antes de deferred_probe_initcall() [2], hace que el proceso de arranque se cuelgue debido a un punto muerto. - Despu\u00e9s de deferred_probe_initcall() [3], impide que kernel_init() contin\u00fae hasta que deferred_probe_timeout expire y supere el punto de deferred_probe_timeout que est\u00e1 tratando de esperar a que el espacio de usuario cargue m\u00f3dulos. Ninguna de estas opciones es buena. Por lo tanto, revierta los cambios a wait_for_device_probe(). [1] - https://lore.kernel.org/lkml/TYAPR01MB45443DF63B9EF29054F7C41FD8C60@TYAPR01MB4544.jpnprd01.prod.outlook.com/ [2] - https://lore.kernel.org/lkml/YowHNo4sBjr9ijZr@dev-arch.thelio-3990X/ [3] - https://lore.kernel.org/lkml/Yo3WvGnNk3LvLb7R@linutronix.de/"}], "lastModified": "2025-09-22T20:29:59.653", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB04EE46-FCAA-4ADF-BCC7-0653EE5E5A9A", "versionEndExcluding": "5.10.122", "versionStartIncluding": "5.7.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC042EE3-4864-4325-BE0B-4BCDBF11AA61", "versionEndExcluding": "5.15.47", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD", "versionEndExcluding": "5.17.15", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103", "versionEndExcluding": "5.18.4", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.7:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3D23CE42-BDB2-4216-8495-230ABE98FCDD"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.7:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512FF86F-0B8C-4DEB-9041-8BD384DD2E58"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.7:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F1AB4A11-C03C-4ABB-B596-0EB3B0F1A8DF"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.7:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9D26AE9C-D49F-4FE9-8A6A-5A7199B7436E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}