{"id":"CVE-2025-38198","title":"fbcon: Make sure modelist not set on unregistered console","summary":"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\nU…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < b3237d451bf3a4490cb1a76f3b7c91d9888f1c4b","Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < 519ba75728ee8cd561dce25fc52a2ec5c47171dc","Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < f28f1f578cd810779d01999c60618cda14c281dd","Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < 54b28f7c567dd659e5f9562f518e4d7f3f6a367b","Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < cedc1b63394a866bf8663a3e40f4546f1d28c8d8","Linux 5.19"],"published":"2025-07-04","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:06:44.445Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38198","references":[{"url":"https://git.kernel.org/stable/c/b3237d451bf3a4490cb1a76f3b7c91d9888f1c4b"},{"url":"https://git.kernel.org/stable/c/519ba75728ee8cd561dce25fc52a2ec5c47171dc"},{"url":"https://git.kernel.org/stable/c/f28f1f578cd810779d01999c60618cda14c281dd"},{"url":"https://git.kernel.org/stable/c/54b28f7c567dd659e5f9562f518e4d7f3f6a367b"},{"url":"https://git.kernel.org/stable/c/cedc1b63394a866bf8663a3e40f4546f1d28c8d8"}],"tags":["cve.org"],"epss":0.00188,"epssPercentile":0.08353,"ingestedAt":"2026-10-15T05:52:46.094Z","slug":"CVE-2025-38198","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < b3237d451bf3a4490cb1a76f3b7c91d9888f1c4b`\n- `Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < 519ba75728ee8cd561dce25fc52a2ec5c47171dc`\n- `Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < f28f1f578cd810779d01999c60618cda14c281dd`\n- `Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < 54b28f7c567dd659e5f9562f518e4d7f3f6a367b`\n- `Linux >= 409d6c95f9c68bb7046410a3502e26e454a1e636 < cedc1b63394a866bf8663a3e40f4546f1d28c8d8`\n- `Linux 5.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}