293 lines
14 KiB
JSON
293 lines
14 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-2023-52564",
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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": "2024-03-02T21:55:42.567Z",
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"datePublished": "2024-03-02T21:59:36.867Z",
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"dateUpdated": "2026-05-23T15:26:08.197Z"
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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": "2026-05-23T15:26:08.197Z"
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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\nRevert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"\n\nThis reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239.\n\nThe commit above is reverted as it did not solve the original issue.\n\ngsm_cleanup_mux() tries to free up the virtual ttys by calling\ngsm_dlci_release() for each available DLCI. There, dlci_put() is called to\ndecrease the reference counter for the DLCI via tty_port_put() which\nfinally calls gsm_dlci_free(). This already clears the pointer which is\nbeing checked in gsm_cleanup_mux() before calling gsm_dlci_release().\nTherefore, it is not necessary to clear this pointer in gsm_cleanup_mux()\nas done in the reverted commit. The commit introduces a null pointer\ndereference:\n <TASK>\n ? __die+0x1f/0x70\n ? page_fault_oops+0x156/0x420\n ? search_exception_tables+0x37/0x50\n ? fixup_exception+0x21/0x310\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? tty_port_put+0x19/0xa0\n gsmtty_cleanup+0x29/0x80 [n_gsm]\n release_one_tty+0x37/0xe0\n process_one_work+0x1e6/0x3e0\n worker_thread+0x4c/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe1/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2f/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>\n\nThe actual issue is that nothing guards dlci_put() from being called\nmultiple times while the tty driver was triggered but did not yet finished\ncalling gsm_dlci_free()."
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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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"drivers/tty/n_gsm.c"
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],
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"versions": [
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{
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"version": "8fc0eabaa73bbd9bd705577071564616da5c8c61",
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"lessThan": "6d5c8862932d31a810b6545f7d69ecc124402c6e",
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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": "5138c228311a863c3cf937b94a3ab4c87f1f70c4",
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"lessThan": "a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb",
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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": "9615ca54bc138e35353a001e8b5d4824dce72188",
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"lessThan": "c61d0b87a7028c2c10faffc524d748334c7b9827",
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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": "9b9c8195f3f0d74a826077fc1c01b9ee74907239",
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"lessThan": "2bff660e0ff349dee84dc4f6f6d10da4497f5b28",
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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": "9b9c8195f3f0d74a826077fc1c01b9ee74907239",
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"lessThan": "29346e217b8ab8a52889b88f00b268278d6b7668",
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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": "74a8d6f50cc90ed0061997db51dfa81a62b0f835",
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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": "5.10.190",
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"lessThan": "5.10.198",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.124",
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"lessThan": "5.15.134",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.43",
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"lessThan": "6.1.56",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.4.8",
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"lessThan": "6.5",
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"status": "affected",
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"versionType": "semver"
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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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"drivers/tty/n_gsm.c"
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],
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"versions": [
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{
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"version": "6.5",
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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": "6.5",
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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": "5.10.198",
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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": "5.15.134",
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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": "6.1.56",
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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": "6.5.6",
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"lessThanOrEqual": "6.5.*",
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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",
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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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"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": "5.10.190",
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"versionEndExcluding": "5.10.198"
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"versionEndExcluding": "6.5.6"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e"
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},
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{
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"url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb"
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"url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668"
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}
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],
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"title": "Revert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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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"id": "CVE-2023-52564",
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"role": "CISA Coordinator",
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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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"version": "2.0.3",
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"timestamp": "2024-03-07T20:09:41.921733Z"
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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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"shortName": "CISA-ADP",
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"dateUpdated": "2024-07-05T17:21:06.965Z"
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"dateUpdated": "2024-08-02T23:03:20.987Z"
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},
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"title": "CVE Program Container",
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"references": [
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"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e",
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