122 lines
5.8 KiB
JSON
122 lines
5.8 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-2025-40260",
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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": "2025-04-16T07:20:57.182Z",
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"datePublished": "2025-12-04T16:08:20.590Z",
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"dateUpdated": "2026-05-11T21:45:53.934Z"
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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": "2026-05-11T21:45:53.934Z"
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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\nsched_ext: Fix scx_enable() crash on helper kthread creation failure\n\nA crash was observed when the sched_ext selftests runner was\nterminated with Ctrl+\\ while test 15 was running:\n\nNIP [c00000000028fa58] scx_enable.constprop.0+0x358/0x12b0\nLR [c00000000028fa2c] scx_enable.constprop.0+0x32c/0x12b0\nCall Trace:\nscx_enable.constprop.0+0x32c/0x12b0 (unreliable)\nbpf_struct_ops_link_create+0x18c/0x22c\n__sys_bpf+0x23f8/0x3044\nsys_bpf+0x2c/0x6c\nsystem_call_exception+0x124/0x320\nsystem_call_vectored_common+0x15c/0x2ec\n\nkthread_run_worker() returns an ERR_PTR() on failure rather than NULL,\nbut the current code in scx_alloc_and_add_sched() only checks for a NULL\nhelper. Incase of failure on SIGQUIT, the error is not handled in\nscx_alloc_and_add_sched() and scx_enable() ends up dereferencing an\nerror pointer.\n\nError handling is fixed in scx_alloc_and_add_sched() to propagate\nPTR_ERR() into ret, so that scx_enable() jumps to the existing error\npath, avoiding random dereference on failure."
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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/sched/ext.c"
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],
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"versions": [
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{
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"version": "bff3b5aec1b727b620adc7c47085592802390125",
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"lessThan": "625e173e2a59b6cf6cbfb51c0a6bea47f3861eab",
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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": "bff3b5aec1b727b620adc7c47085592802390125",
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"lessThan": "7b6216baae751369195fa3c83d434d23bcda406a",
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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/sched/ext.c"
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],
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"versions": [
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{
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"version": "6.16",
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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": "6.16",
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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": "6.17.10",
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"lessThanOrEqual": "6.17.*",
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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": "6.18",
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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": "6.16",
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"versionEndExcluding": "6.17.10"
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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": "6.16",
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"versionEndExcluding": "6.18"
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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/625e173e2a59b6cf6cbfb51c0a6bea47f3861eab"
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},
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{
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"url": "https://git.kernel.org/stable/c/7b6216baae751369195fa3c83d434d23bcda406a"
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}
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],
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"title": "sched_ext: Fix scx_enable() crash on helper kthread creation failure",
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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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}
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} |