206 lines
10 KiB
JSON
206 lines
10 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80730",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.789Z",
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"datePublished": "2026-09-03T08:21:48.325Z",
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"dateUpdated": "2026-09-03T08:21:48.325Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-09-03T08:21:48.325Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/trace/ring_buffer.c"
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],
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"versions": [
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "51d78fad30dd9ae45721224103662bdbcf210096",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "93e7044b548a72022208595d2c1b188bb225ce83",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "8532983c312e8b875d7c9e440f8ee4674ea4b711",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "64ed3a049e3e81b801e7c5bb052416152443f585",
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"lessThan": "91542863abade2fd4f2b361991f5386ad9d19c8c",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/trace/ring_buffer.c"
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],
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"versions": [
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{
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"version": "5.17",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.17",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.152",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.104",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.45",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.9",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.1.183"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.6.152"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.12.104"
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.18.45"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "7.1.9"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/51d78fad30dd9ae45721224103662bdbcf210096"
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},
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{
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"url": "https://git.kernel.org/stable/c/93e7044b548a72022208595d2c1b188bb225ce83"
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},
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{
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"url": "https://git.kernel.org/stable/c/8532983c312e8b875d7c9e440f8ee4674ea4b711"
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},
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{
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"url": "https://git.kernel.org/stable/c/6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902"
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},
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{
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"url": "https://git.kernel.org/stable/c/3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b"
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},
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{
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"url": "https://git.kernel.org/stable/c/91542863abade2fd4f2b361991f5386ad9d19c8c"
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}
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],
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"title": "ring-buffer: Fix crash passing ERR_PTR to kthread_stop()",
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"x_generator": {
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} |