156 lines
7.9 KiB
JSON
156 lines
7.9 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-2024-46704",
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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": "2024-09-11T15:12:18.251Z",
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"datePublished": "2024-09-13T06:27:31.822Z",
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"dateUpdated": "2026-05-11T20:34:46.394Z"
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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": "2026-05-11T20:34:46.394Z"
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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\nworkqueue: Fix spruious data race in __flush_work()\n\nWhen flushing a work item for cancellation, __flush_work() knows that it\nexclusively owns the work item through its PENDING bit. 134874e2eee9\n(\"workqueue: Allow cancel_work_sync() and disable_work() from atomic\ncontexts on BH work items\") added a read of @work->data to determine whether\nto use busy wait for BH work items that are being canceled. While the read\nis safe when @from_cancel, @work->data was read before testing @from_cancel\nto simplify code structure:\n\n\tdata = *work_data_bits(work);\n\tif (from_cancel &&\n\t !WARN_ON_ONCE(data & WORK_STRUCT_PWQ) && (data & WORK_OFFQ_BH)) {\n\nWhile the read data was never used if !@from_cancel, this could trigger\nKCSAN data race detection spuriously:\n\n ==================================================================\n BUG: KCSAN: data-race in __flush_work / __flush_work\n\n write to 0xffff8881223aa3e8 of 8 bytes by task 3998 on cpu 0:\n instrument_write include/linux/instrumented.h:41 [inline]\n ___set_bit include/asm-generic/bitops/instrumented-non-atomic.h:28 [inline]\n insert_wq_barrier kernel/workqueue.c:3790 [inline]\n start_flush_work kernel/workqueue.c:4142 [inline]\n __flush_work+0x30b/0x570 kernel/workqueue.c:4178\n flush_work kernel/workqueue.c:4229 [inline]\n ...\n\n read to 0xffff8881223aa3e8 of 8 bytes by task 50 on cpu 1:\n __flush_work+0x42a/0x570 kernel/workqueue.c:4188\n flush_work kernel/workqueue.c:4229 [inline]\n flush_delayed_work+0x66/0x70 kernel/workqueue.c:4251\n ...\n\n value changed: 0x0000000000400000 -> 0xffff88810006c00d\n\nReorganize the code so that @from_cancel is tested before @work->data is\naccessed. The only problem is triggering KCSAN detection spuriously. This\nshouldn't need READ_ONCE() or other access qualifiers.\n\nNo functional changes."
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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/workqueue.c"
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],
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"versions": [
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{
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"version": "134874e2eee9380c2700411d4844cbc29297bc01",
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"lessThan": "91d09642127a32fde231face2ff489af70eef316",
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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": "134874e2eee9380c2700411d4844cbc29297bc01",
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"lessThan": "8bc35475ef1a23b0e224f3242eb11c76cab0ea88",
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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/workqueue.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.10.7",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "6.10",
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"versionEndExcluding": "6.10.7"
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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": "6.10",
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"versionEndExcluding": "6.11"
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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/91d09642127a32fde231face2ff489af70eef316"
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},
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{
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"url": "https://git.kernel.org/stable/c/8bc35475ef1a23b0e224f3242eb11c76cab0ea88"
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}
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],
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"title": "workqueue: Fix spruious data race in __flush_work()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T15:03:23.715213Z",
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"id": "CVE-2024-46704",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-29T15:03:38.514Z"
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}
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}
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]
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}
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} |