CVE-2026-80741

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80741", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.790Z", "datePublished": "2026-09-03T08:26:25.322Z", "dateUpdated": "2026-09-04T04:58:24.919Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-04T04:58:24.919Z"}, "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"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"}, "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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/clients/drm_log.c"], "versions": [{"version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "lessThan": "16a2716910ecf7d31bf3c033ee7c506a0b00b2ee", "status": "affected", "versionType": "git"}, {"version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "lessThan": "16bcea56f4205314ec2aa04a7ec74e5261d253c7", "status": "affected", "versionType": "git"}, {"version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "lessThan": "60baa179ed1333535f6e2da4133511db55278ee4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/clients/drm_log.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/clients/drm_log.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "16a2716910ecf7d31bf3c033ee7c506a0b00b2ee", "status": "affected", "version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "versionType": "git"}, {"lessThan": "16bcea56f4205314ec2aa04a7ec74e5261d253c7", "status": "affected", "version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "versionType": "git"}, {"lessThan": "60baa179ed1333535f6e2da4133511db55278ee4", "status": "affected", "version": "25e2c2a3eff55683bbe77b108db2a7e389246666", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/clients/drm_log.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"lessThan": "6.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.46", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-80741", "lastModified": "2026-09-04T05:17:14.470", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-03T13:06:13.317", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/16a2716910ecf7d31bf3c033ee7c506a0b00b2ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/16bcea56f4205314ec2aa04a7ec74e5261d253c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60baa179ed1333535f6e2da4133511db55278ee4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[25e2c2a3eff55683bbe77b108db2a7e389246666,16a2716910ecf7d31bf3c033ee7c506a0b00b2ee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[25e2c2a3eff55683bbe77b108db2a7e389246666,16bcea56f4205314ec2aa04a7ec74e5261d253c7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[25e2c2a3eff55683bbe77b108db2a7e389246666,60baa179ed1333535f6e2da4133511db55278ee4)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.46,6.19.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.10,7.2.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-03T13:15:04.188121+00:00", "updated": "2026-09-04T07:30:15.789986+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}