CVE-2026-80730

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80730", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.789Z", "datePublished": "2026-09-03T08:21:48.325Z", "dateUpdated": "2026-09-03T08:21:48.325Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-03T08:21:48.325Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix crash passing ERR_PTR to kthread_stop()\n\nIn test_ringbuffer()'s out_free cleanup loop, the check\n`!rb_threads[cpu]` only catches NULL entries and misses entries that\nhold an ERR_PTR.\n\nrb_threads[] is static, so unassigned slots are NULL. But when\nkthread_run_on_cpu() fails for a cpu, it stores ERR_PTR(-ENOMEM) (or\n-EINTR) in rb_threads[cpu] before the creation loop jumps to out_free.\nThat entry is non-NULL, so the old `!ptr` check does not break, and the\ncleanup proceeds to call kthread_stop() on the ERR_PTR. kthread_stop()\nthen dereferences the bogus pointer, crashing the kernel during the\nlate_initcall self-test.\n\ncrash logs:\n BUG: kernel NULL pointer dereference, address: 000000000000001c\n Oops: 0002 [#1] SMP NOPTI\n CPU: 1 PID: 1 Comm: swapper/0 Not tainted 7.2.0-rc6-dirty #7 PREEMPT(lazy)\n RIP: 0010:kthread_stop+0x2e/0x220\n RBX: fffffffffffffff4\n CR2: 000000000000001c\n Call Trace:\n <TASK>\n test_ringbuffer+0x1ec/0x650\n do_one_initcall+0x6c/0x2c0\n kernel_init_freeable+0x21d/0x420\n kernel_init+0x15/0x1c0\n ret_from_fork+0x21b/0x320\n </TASK>\n Kernel panic - not syncing: Fatal exception"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/ring_buffer.c"], "versions": [{"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "51d78fad30dd9ae45721224103662bdbcf210096", "status": "affected", "versionType": "git"}, {"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "93e7044b548a72022208595d2c1b188bb225ce83", "status": "affected", "versionType": "git"}, {"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "8532983c312e8b875d7c9e440f8ee4674ea4b711", "status": "affected", "versionType": "git"}, {"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902", "status": "affected", "versionType": "git"}, {"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b", "status": "affected", "versionType": "git"}, {"version": "64ed3a049e3e81b801e7c5bb052416152443f585", "lessThan": "91542863abade2fd4f2b361991f5386ad9d19c8c", "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/trace/ring_buffer.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.152", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "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": "5.17", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/51d78fad30dd9ae45721224103662bdbcf210096"}, {"url": "https://git.kernel.org/stable/c/93e7044b548a72022208595d2c1b188bb225ce83"}, {"url": "https://git.kernel.org/stable/c/8532983c312e8b875d7c9e440f8ee4674ea4b711"}, {"url": "https://git.kernel.org/stable/c/6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902"}, {"url": "https://git.kernel.org/stable/c/3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b"}, {"url": "https://git.kernel.org/stable/c/91542863abade2fd4f2b361991f5386ad9d19c8c"}], "title": "ring-buffer: Fix crash passing ERR_PTR to kthread_stop()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/ring_buffer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "51d78fad30dd9ae45721224103662bdbcf210096", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}, {"lessThan": "93e7044b548a72022208595d2c1b188bb225ce83", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}, {"lessThan": "8532983c312e8b875d7c9e440f8ee4674ea4b711", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}, {"lessThan": "6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}, {"lessThan": "3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}, {"lessThan": "91542863abade2fd4f2b361991f5386ad9d19c8c", "status": "affected", "version": "64ed3a049e3e81b801e7c5bb052416152443f585", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/ring_buffer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "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\nring-buffer: Fix crash passing ERR_PTR to kthread_stop()\n\nIn test_ringbuffer()'s out_free cleanup loop, the check\n`!rb_threads[cpu]` only catches NULL entries and misses entries that\nhold an ERR_PTR.\n\nrb_threads[] is static, so unassigned slots are NULL. But when\nkthread_run_on_cpu() fails for a cpu, it stores ERR_PTR(-ENOMEM) (or\n-EINTR) in rb_threads[cpu] before the creation loop jumps to out_free.\nThat entry is non-NULL, so the old `!ptr` check does not break, and the\ncleanup proceeds to call kthread_stop() on the ERR_PTR. kthread_stop()\nthen dereferences the bogus pointer, crashing the kernel during the\nlate_initcall self-test.\n\ncrash logs:\n BUG: kernel NULL pointer dereference, address: 000000000000001c\n Oops: 0002 [#1] SMP NOPTI\n CPU: 1 PID: 1 Comm: swapper/0 Not tainted 7.2.0-rc6-dirty #7 PREEMPT(lazy)\n RIP: 0010:kthread_stop+0x2e/0x220\n RBX: fffffffffffffff4\n CR2: 000000000000001c\n Call Trace:\n <TASK>\n test_ringbuffer+0x1ec/0x650\n do_one_initcall+0x6c/0x2c0\n kernel_init_freeable+0x21d/0x420\n kernel_init+0x15/0x1c0\n ret_from_fork+0x21b/0x320\n </TASK>\n Kernel panic - not syncing: Fatal exception"}], "id": "CVE-2026-80730", "lastModified": "2026-09-03T13:06:11.550", "metrics": {}, "published": "2026-09-03T13:06:11.550", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/51d78fad30dd9ae45721224103662bdbcf210096"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8532983c312e8b875d7c9e440f8ee4674ea4b711"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/91542863abade2fd4f2b361991f5386ad9d19c8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/93e7044b548a72022208595d2c1b188bb225ce83"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,51d78fad30dd9ae45721224103662bdbcf210096)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,93e7044b548a72022208595d2c1b188bb225ce83)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,8532983c312e8b875d7c9e440f8ee4674ea4b711)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64ed3a049e3e81b801e7c5bb052416152443f585,91542863abade2fd4f2b361991f5386ad9d19c8c)"}}], "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": "5.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.183,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.152,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0)"}}, {"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": "2026-09-03T12:30:03.814188+00:00", "updated": "2026-09-03T12:30:04.249091+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}