{"api_version":"1","generated_at":"2026-10-27T09:11:53+00:00","cve":"CVE-2026-80741","urls":{"html":"https://cve.report/CVE-2026-80741","api":"https://cve.report/api/cve/CVE-2026-80741.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80741","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80741"},"summary":{"title":"drm/log: Fix out-of-bounds read on empty message length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix out-of-bounds read on empty message length\n\ndrm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing\nnewline, but len is unsigned int. If len is 0, the subtraction wraps\nto UINT_MAX, causing an out-of-bounds read.\n\nAdd an early return when len is 0.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-03 13:06:13","updated_at":"2026-09-04 05:17:14"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/16a2716910ecf7d31bf3c033ee7c506a0b00b2ee","name":"https://git.kernel.org/stable/c/16a2716910ecf7d31bf3c033ee7c506a0b00b2ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/60baa179ed1333535f6e2da4133511db55278ee4","name":"https://git.kernel.org/stable/c/60baa179ed1333535f6e2da4133511db55278ee4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/16bcea56f4205314ec2aa04a7ec74e5261d253c7","name":"https://git.kernel.org/stable/c/16bcea56f4205314ec2aa04a7ec74e5261d253c7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80741","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80741","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25e2c2a3eff55683bbe77b108db2a7e389246666 16a2716910ecf7d31bf3c033ee7c506a0b00b2ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25e2c2a3eff55683bbe77b108db2a7e389246666 16bcea56f4205314ec2aa04a7ec74e5261d253c7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25e2c2a3eff55683bbe77b108db2a7e389246666 60baa179ed1333535f6e2da4133511db55278ee4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.46 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.10 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80741","cve":"CVE-2026-80741","epss":"0.001570000","percentile":"0.051660000","score_date":"2026-09-07","updated_at":"2026-09-08 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the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix out-of-bounds read on empty message length\n\ndrm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing\nnewline, but len is unsigned int. If len is 0, the subtraction wraps\nto UINT_MAX, causing an out-of-bounds read.\n\nAdd an early return when len is 0."}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - The bug is in drm_log, an in-kernel DRM boot console that renders printk records to the framebuffer; it is only reached from the local printk/nbcon console path, not from any network protocol or physical bus.\nAC:L - Once CONFIG_DRM_CLIENT_LOG is active (common on embedded/kiosk displays), a local actor can drive printk/console output; if a zero-length record is delivered to drm_log_draw_kmsg_record(), the unsigned wrap to UINT_MAX makes the OOB read deterministic rather than race-dependent.\nPR:L - No root or DRM master is required to reach the console printk path; unprivileged local processes routinely trigger kernel logging via syscalls and /dev/kmsg (CAP_SYSLOG is obtainable in user namespaces), and drm_log only refuses to draw when a userspace DRM master is already held.\nUI:N - Exploitation does not require any victim to click, mount, or open a file; it is triggered automatically when the kernel console layer emits a qualifying (including zero-length) message to the drm_log nbcon handler.\nS:U - Impact stays within kernel context on the same machine (display logger crash/OOB read); it does not cross a VM, container, or IOMMU security boundary.\nC:H - With len=0, s[len-1] indexes s[UINT_MAX-1], an unbounded out-of-bounds kernel read; per kernel CVSS guidance, OOB reads are rated High even when the immediate fault dominates.\nI:N - The defect is a read-side integer underflow only; it does not corrupt or write adjacent memory and provides no direct arbitrary-write or code-execution primitive.\nA:H - Reading at offset UINT_MAX from the printk outbuf is virtually certain to fault the console thread with a kernel oops/panic, denying display and potentially halting the system on embedded drm_log deployments."}]}],"providerMetadata":{"dateUpdated":"2026-09-04T04:58:24.919Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/16a2716910ecf7d31bf3c033ee7c506a0b00b2ee"},{"url":"https://git.kernel.org/stable/c/16bcea56f4205314ec2aa04a7ec74e5261d253c7"},{"url":"https://git.kernel.org/stable/c/60baa179ed1333535f6e2da4133511db55278ee4"}],"title":"drm/log: Fix out-of-bounds read on empty message length","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80741","datePublished":"2026-09-03T08:26:25.322Z","dateReserved":"2026-08-26T14:34:25.790Z","dateUpdated":"2026-09-04T04:58:24.919Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-03 13:06:13","lastModifiedDate":"2026-09-04 05:17:14","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80741","Ordinal":"1","Title":"drm/log: Fix out-of-bounds read on empty message length","CVE":"CVE-2026-80741","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80741","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix out-of-bounds read on empty message length\n\ndrm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing\nnewline, but len is unsigned int. If len is 0, the subtraction wraps\nto UINT_MAX, causing an out-of-bounds read.\n\nAdd an early return when len is 0.","Type":"Description","Title":"drm/log: Fix out-of-bounds read on empty message length"}]}}}