{
    "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": [
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                    "nodes": [
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                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.183"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.17",
                                    "versionEndExcluding": "6.6.152"
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            ],
            "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()",
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