CVE-2025-38198

{"id": "CVE-2025-38198", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-07-04T14:15:27.040", "references": [{"url": "https://git.kernel.org/stable/c/519ba75728ee8cd561dce25fc52a2ec5c47171dc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/54b28f7c567dd659e5f9562f518e4d7f3f6a367b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b3237d451bf3a4490cb1a76f3b7c91d9888f1c4b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cedc1b63394a866bf8663a3e40f4546f1d28c8d8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f28f1f578cd810779d01999c60618cda14c281dd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html", "tags": ["Third Party Advisory", "Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-129"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Make sure modelist not set on unregistered console\n\nIt looks like attempting to write to the \"store_modes\" sysfs node will\nrun afoul of unregistered consoles:\n\nUBSAN: array-index-out-of-bounds in drivers/video/fbdev/core/fbcon.c:122:28\nindex -1 is out of range for type 'fb_info *[32]'\n...\n fbcon_info_from_console+0x192/0x1a0 drivers/video/fbdev/core/fbcon.c:122\n fbcon_new_modelist+0xbf/0x2d0 drivers/video/fbdev/core/fbcon.c:3048\n fb_new_modelist+0x328/0x440 drivers/video/fbdev/core/fbmem.c:673\n store_modes+0x1c9/0x3e0 drivers/video/fbdev/core/fbsysfs.c:113\n dev_attr_store+0x55/0x80 drivers/base/core.c:2439\n\nstatic struct fb_info *fbcon_registered_fb[FB_MAX];\n...\nstatic signed char con2fb_map[MAX_NR_CONSOLES];\n...\nstatic struct fb_info *fbcon_info_from_console(int console)\n...\n return fbcon_registered_fb[con2fb_map[console]];\n\nIf con2fb_map contains a -1 things go wrong here. Instead, return NULL,\nas callers of fbcon_info_from_console() are trying to compare against\nexisting \"info\" pointers, so error handling should kick in correctly."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbcon: Aseg\u00farese de que modelist no est\u00e9 configurado en una consola no registrada Parece que intentar escribir en el nodo sysfs \"store_modes\" entrar\u00e1 en conflicto con las consolas no registradas: UBSAN: array-index-out-of-bounds in drivers/video/fbdev/core/fbcon.c:122:28 index -1 is out of range for type 'fb_info *[32]' ... fbcon_info_from_console+0x192/0x1a0 drivers/video/fbdev/core/fbcon.c:122 fbcon_new_modelist+0xbf/0x2d0 drivers/video/fbdev/core/fbcon.c:3048 fb_new_modelist+0x328/0x440 drivers/video/fbdev/core/fbmem.c:673 store_modes+0x1c9/0x3e0 drivers/video/fbdev/core/fbsysfs.c:113 dev_attr_store+0x55/0x80 drivers/base/core.c:2439 static struct fb_info *fbcon_registered_fb[FB_MAX]; ... static signed char con2fb_map[MAX_NR_CONSOLES]; ... static struct fb_info *fbcon_info_from_console(int console) ... return fbcon_registered_fb[con2fb_map[console]]; Si con2fb_map contiene un valor de -1, la situaci\u00f3n podr\u00eda fallar. En su lugar, se devuelve NULL, ya que quienes llaman a fbcon_info_from_console() intentan comparar con punteros \"info\" existentes, por lo que la gesti\u00f3n de errores deber\u00eda funcionar correctamente."}], "lastModified": "2025-12-18T21:25:44.773", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20240234-C43A-430F-93FD-8F52CD666DE5", "versionEndExcluding": "6.1.142"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C5E01853-7048-4D78-9479-9AEE41AC8456", "versionEndExcluding": "6.6.95", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E569FD34-0076-4428-BE17-EECCF867611C", "versionEndExcluding": "6.12.35", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DFD174C5-1AA2-4671-BDDC-1A9FCC753655", "versionEndExcluding": "6.15.4", "versionStartIncluding": "6.13"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}