{"id":"CVE-2026-80740","state":"PUBLISHED","title":"drm/log: Fix infinite loop when scale is too large for display","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix infinite loop when scale is too large for display\n\nWhen scale is large enough that scaled_font exceeds the display\ndimensions, rows or columns become 0. A columns value of 0 causes\nan infinite loop in drm_log_draw_kmsg_record() because the loop\nnever decrements len.\n\nCheck for zero rows/columns in drm_log_setup_modeset() and return\nan error, cleaning up the already allocated buffer to avoid a leak.","publishedAt":"2026-09-03T08:26:24.706Z","updatedAt":"2026-09-03T08:26:24.706Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b","versionType":"git"},{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6","versionType":"git"},{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"f4f2bba28df9b9aaa00262a462139dbbcdc38d9f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/clients/drm_log.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","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/gpu/drm/clients/drm_log.c"]}],"references":["https://git.kernel.org/stable/c/a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b","https://git.kernel.org/stable/c/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6","https://git.kernel.org/stable/c/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80740.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80740","state":"PUBLISHED","datePublished":"2026-09-03T08:26:24.706Z","dateUpdated":"2026-09-03T08:26:24.706Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.790Z"},"containers":{"cna":{"title":"drm/log: Fix infinite loop when scale is too large for display","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix infinite loop when scale is too large for display\n\nWhen scale is large enough that scaled_font exceeds the display\ndimensions, rows or columns become 0. A columns value of 0 causes\nan infinite loop in drm_log_draw_kmsg_record() because the loop\nnever decrements len.\n\nCheck for zero rows/columns in drm_log_setup_modeset() and return\nan error, cleaning up the already allocated buffer to avoid a leak."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b","versionType":"git"},{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6","versionType":"git"},{"version":"8a4b913df427b8f900bcc7849cc15a7b81628d57","status":"affected","lessThan":"f4f2bba28df9b9aaa00262a462139dbbcdc38d9f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/clients/drm_log.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","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/gpu/drm/clients/drm_log.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b"},{"url":"https://git.kernel.org/stable/c/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6"},{"url":"https://git.kernel.org/stable/c/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-09-03T08:26:24.706Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.1.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}