248 lines
13 KiB
JSON
248 lines
13 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-2026-98380",
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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": "2026-09-25T10:25:14.345Z",
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"datePublished": "2026-10-09T07:34:20.218Z",
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"dateUpdated": "2026-10-19T09:18:31.007Z"
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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": "2026-10-19T09:18:31.007Z"
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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\nnet/sched: reject IDR error pointers when deleting actions\n\ntcf_action_delete() drops the reference held by its lookup before calling\ntcf_idr_delete_index() with the saved action index. An unlocked\nclassifier can remove that action and reserve the same IDR slot with\nERR_PTR(-EBUSY) in between.\n\ntcf_idr_delete_index() only checks the lookup result for NULL. It\ntherefore treats the reservation as a tc_action and dereferences\ntcfa_bindcnt. A hardware execution breakpoint was used to schedule the\ninterleaving without changing the kernel source. KASAN reported this\ndecoded trace:\n\n BUG: KASAN: null-ptr-deref in tca_action_gd+0x5b9/0x1010\n Read of size 4 at addr 0000000000000010 by task poc/150\n Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002\n RIP: tca_action_gd+0x5c0/0x1010:\n arch_atomic_read at arch/x86/include/asm/atomic.h:23\n raw_atomic_read at include/linux/atomic/atomic-arch-fallback.h:457\n atomic_read at include/linux/atomic/atomic-instrumented.h:33\n tcf_idr_delete_index at net/sched/act_api.c:766\n tcf_action_delete at net/sched/act_api.c:1859\n tcf_del_notify at net/sched/act_api.c:2014\n tca_action_gd at net/sched/act_api.c:2064\n R13: 0000000000000010 R15: fffffffffffffff0\n Kernel panic - not syncing: Fatal exception\n\nR15 contains ERR_PTR(-EBUSY), and adding the tcfa_bindcnt offset produces\nthe address in R13. With the guard applied, the same reproducer returned\n-ENOENT without a KASAN report or panic. Treat error pointers as absent\nand return -ENOENT."
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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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"net/sched/act_api.c"
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],
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"versions": [
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{
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"version": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "39b751a210bf61a374afa82749afc7a77a08bf1d",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "dd80a7519824b72c8fcfd3cc50cb93f7e2d90923",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "6bf076258aac4e0af69ef317656c31ce6444d647",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "6c9f07bf8800171de2cd3f02815cebe1f4d45f2d",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "259caa711b7688365676442e2fdb286b8aceaa80",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "968550a439f64bd1a6c0d88efb92e4f082f84a26",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "a9551f26287debe6d8aa6e8841974661065b975f",
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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": "0190c1d452a91c38a3462abdd81752be1b9006a8",
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"lessThan": "c82b797abe668d0b668601a93ba2c0b071a63574",
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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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"net/sched/act_api.c"
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],
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"versions": [
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{
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"version": "4.19",
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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": "4.19",
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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": "5.10.271",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.112",
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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": "6.18.55",
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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": "7.2.9",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "4.19",
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"versionEndExcluding": "5.10.271"
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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": "4.19",
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"versionEndExcluding": "5.15.222"
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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": "4.19",
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"versionEndExcluding": "6.1.189"
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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": "4.19",
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"versionEndExcluding": "6.6.158"
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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": "4.19",
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"versionEndExcluding": "6.12.112"
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"versionEndExcluding": "6.18.55"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.19",
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"versionEndExcluding": "7.2.9"
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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/39b751a210bf61a374afa82749afc7a77a08bf1d"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd80a7519824b72c8fcfd3cc50cb93f7e2d90923"
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},
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{
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"url": "https://git.kernel.org/stable/c/6bf076258aac4e0af69ef317656c31ce6444d647"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c9f07bf8800171de2cd3f02815cebe1f4d45f2d"
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},
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{
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"url": "https://git.kernel.org/stable/c/259caa711b7688365676442e2fdb286b8aceaa80"
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},
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{
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"url": "https://git.kernel.org/stable/c/968550a439f64bd1a6c0d88efb92e4f082f84a26"
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},
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{
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"url": "https://git.kernel.org/stable/c/a9551f26287debe6d8aa6e8841974661065b975f"
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},
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{
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"url": "https://git.kernel.org/stable/c/c82b797abe668d0b668601a93ba2c0b071a63574"
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}
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],
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"title": "net/sched: reject IDR error pointers when deleting actions",
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"x_generator": {
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} |