{"id":"CVE-2026-64245","state":"PUBLISHED","title":"fbdev: modedb: fix a possible UAF in fb_find_mode()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: modedb: fix a possible UAF in fb_find_mode()\n\nIf mode_option is NULL, it is assigned from mode_option_buf:\n\n  if (!mode_option) {\n    fb_get_options(NULL, &mode_option_buf);\n    mode_option = mode_option_buf;\n  }\n\nLater, name is assigned from mode_option:\n\n  const char *name = mode_option;\n\nHowever, mode_option_buf is freed before name is no longer used:\n\n  kfree(mode_option_buf);\n\nwhile name is still accessed by:\n\n  if ((name_matches(db[i], name, namelen) ||\n\nSince name aliases mode_option_buf, this may result in a\nuse-after-free.\n\nFix this by extending the lifetime of mode_option_buf until the end of the\nfunction by using scope-based resource management for cleanup.","publishedAt":"2026-07-24T15:31:14.142Z","updatedAt":"2026-08-17T04:51:56.311Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"c7dc382439f7b019e207055b52e9cec051d42fa9","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"f906347d75c7fc377041c6d3c535d0f08846aada","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"4d418cf8daf57e454b4d855bf9b2419fd8e6a540","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"13b6f0cdd5cd5e60f682ec43134ab0e2024bd356","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"85b6256469cebdac395e7447147e06b2e151014f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/modedb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/modedb.c"]}],"references":["https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9","https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada","https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540","https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356","https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64245.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64245","state":"PUBLISHED","datePublished":"2026-07-24T15:31:14.142Z","dateUpdated":"2026-08-17T04:51:56.311Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.772Z"},"containers":{"cna":{"title":"fbdev: modedb: fix a possible UAF in fb_find_mode()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: modedb: fix a possible UAF in fb_find_mode()\n\nIf mode_option is NULL, it is assigned from mode_option_buf:\n\n  if (!mode_option) {\n    fb_get_options(NULL, &mode_option_buf);\n    mode_option = mode_option_buf;\n  }\n\nLater, name is assigned from mode_option:\n\n  const char *name = mode_option;\n\nHowever, mode_option_buf is freed before name is no longer used:\n\n  kfree(mode_option_buf);\n\nwhile name is still accessed by:\n\n  if ((name_matches(db[i], name, namelen) ||\n\nSince name aliases mode_option_buf, this may result in a\nuse-after-free.\n\nFix this by extending the lifetime of mode_option_buf until the end of the\nfunction by using scope-based resource management for cleanup."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"c7dc382439f7b019e207055b52e9cec051d42fa9","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"f906347d75c7fc377041c6d3c535d0f08846aada","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"4d418cf8daf57e454b4d855bf9b2419fd8e6a540","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"13b6f0cdd5cd5e60f682ec43134ab0e2024bd356","versionType":"git"},{"version":"089d924d03d5c17b05d02992f57671ccfba1c4f0","status":"affected","lessThan":"85b6256469cebdac395e7447147e06b2e151014f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/modedb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/modedb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9"},{"url":"https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada"},{"url":"https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540"},{"url":"https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356"},{"url":"https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:51:56.311Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.38"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.1.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}