CVE-2026-93134

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93134", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.087Z", "datePublished": "2026-09-17T16:11:36.077Z", "dateUpdated": "2026-10-19T09:06:07.190Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:06:07.190Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nprintk: Fix possible console use-after-free\n\nWhen emitting a record via legacy printing, it is possible that a handover\nto another legacy printing context occurs. When a context has performed a\nhandover, the console SRCU read lock is released and the pointer to the\nconsole struct might now be invalid. Therefore, after calling\nnbcon_legacy_emit_next_record() or console_emit_next_record(), it is\nnecessary to check if a handover occurred _before_ further @con usage.\n\nSashiko pointed out that console_flush_one_record() was not doing this.\n\nIn console_flush_one_record(), after emitting a record, move the further\nusage of @con after the handover check."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/printk/printk.c"], "versions": [{"version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "lessThan": "f0104a7b730de32eefb3d4a27279592b5504ad59", "status": "affected", "versionType": "git"}, {"version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "lessThan": "fbf9bb81b21537ede387a31cc586f1d2ce66a74e", "status": "affected", "versionType": "git"}, {"version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "lessThan": "8f194dee0c0d1223255bae1429e1939882f540fc", "status": "affected", "versionType": "git"}, {"version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "lessThan": "36630cafbeede0b64c370edb2f7b4094327ee1e0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/printk/printk.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.12", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f0104a7b730de32eefb3d4a27279592b5504ad59"}, {"url": "https://git.kernel.org/stable/c/fbf9bb81b21537ede387a31cc586f1d2ce66a74e"}, {"url": "https://git.kernel.org/stable/c/8f194dee0c0d1223255bae1429e1939882f540fc"}, {"url": "https://git.kernel.org/stable/c/36630cafbeede0b64c370edb2f7b4094327ee1e0"}], "title": "printk: Fix possible console use-after-free", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/printk/printk.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f0104a7b730de32eefb3d4a27279592b5504ad59", "status": "affected", "version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "versionType": "git"}, {"lessThan": "fbf9bb81b21537ede387a31cc586f1d2ce66a74e", "status": "affected", "version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "versionType": "git"}, {"lessThan": "8f194dee0c0d1223255bae1429e1939882f540fc", "status": "affected", "version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "versionType": "git"}, {"lessThan": "36630cafbeede0b64c370edb2f7b4094327ee1e0", "status": "affected", "version": "c158834b223fbfab3a14855ac203b8d9cddbbefd", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/printk/printk.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nprintk: Fix possible console use-after-free\n\nWhen emitting a record via legacy printing, it is possible that a handover\nto another legacy printing context occurs. When a context has performed a\nhandover, the console SRCU read lock is released and the pointer to the\nconsole struct might now be invalid. Therefore, after calling\nnbcon_legacy_emit_next_record() or console_emit_next_record(), it is\nnecessary to check if a handover occurred _before_ further @con usage.\n\nSashiko pointed out that console_flush_one_record() was not doing this.\n\nIn console_flush_one_record(), after emitting a record, move the further\nusage of @con after the handover check."}], "id": "CVE-2026-93134", "lastModified": "2026-10-19T10:17:03.420", "metrics": {}, "published": "2026-09-17T17:18:08.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36630cafbeede0b64c370edb2f7b4094327ee1e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f194dee0c0d1223255bae1429e1939882f540fc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f0104a7b730de32eefb3d4a27279592b5504ad59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fbf9bb81b21537ede387a31cc586f1d2ce66a74e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c158834b223fbfab3a14855ac203b8d9cddbbefd,f0104a7b730de32eefb3d4a27279592b5504ad59)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c158834b223fbfab3a14855ac203b8d9cddbbefd,fbf9bb81b21537ede387a31cc586f1d2ce66a74e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c158834b223fbfab3a14855ac203b8d9cddbbefd,8f194dee0c0d1223255bae1429e1939882f540fc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c158834b223fbfab3a14855ac203b8d9cddbbefd,36630cafbeede0b64c370edb2f7b4094327ee1e0)"}}], "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": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "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": "2026-09-19T08:00:13.652906+00:00", "updated": "2026-09-19T22:30:55.049184+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}