238 lines
13 KiB
JSON
238 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-2022-49968",
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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": "2025-06-18T10:57:27.384Z",
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"datePublished": "2025-06-18T11:00:32.443Z",
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"dateUpdated": "2026-08-05T08:56:55.772Z"
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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": "2026-08-05T08:56:55.772Z"
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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\nieee802154/adf7242: defer destroy_workqueue call\n\nThere is a possible race condition (use-after-free) like below\n\n (FREE) | (USE)\n adf7242_remove | adf7242_channel\n cancel_delayed_work_sync |\n destroy_workqueue (1) | adf7242_cmd_rx\n | mod_delayed_work (2)\n |\n\nThe root cause for this race is that the upper layer (ieee802154) is\nunaware of this detaching event and the function adf7242_channel can\nbe called without any checks.\n\nTo fix this, we can add a flag write at the beginning of adf7242_remove\nand add flag check in adf7242_channel. Or we can just defer the\ndestructive operation like other commit 3e0588c291d6 (\"hamradio: defer\nax25 kfree after unregister_netdev\") which let the\nieee802154_unregister_hw() to handle the synchronization. This patch\ntakes the second option.\n\nruns\")"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"baseScore": 8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:A - The ADF7242 is an IEEE 802.15.4 transceiver; after destroy_workqueue and before unregister disables the IRQ, adf7242_isr() unconditionally calls mod_delayed_work() on the freed workqueue when the radio raises an RX interrupt, so an attacker in WPAN/Zigbee radio range can trigger the UAF by transmitting frames.\nAC:L - Once driver remove/unbind begins, the window through ieee802154_unregister_hw() (rtnl, interface teardown, then adf7242_stop/disable_irq) is large enough that continuous adjacent frame injection reliably hits the still-armed ISR path; the attacker fully controls the use side of the race.\nPR:N - Triggering the ISR use-after-free requires only the ability to send 802.15.4 radio frames that cause hardware IRQs—no local Linux credentials or CAP_NET_ADMIN—while the free side is a separate administrator unbind/unload.\nUI:R - SPI driver remove (sysfs unbind or rmmod) is required to destroy the workqueue before unregister; that teardown is a privileged operator/system maintenance action the adjacent attacker cannot perform alone.\nS:U - The UAF corrupts kernel heap state on the same host and yields standard local privilege-escalation impact without crossing a VM, IOMMU, or other security-authority boundary.\nC:H - This is a kernel workqueue use-after-free; freed-object reuse enables disclosure of kernel memory contents, so confidentiality impact is High per UAF guidance.\nI:H - mod_delayed_work() on a destroyed workqueue is exploitable heap memory corruption that can be turned into arbitrary write / control-flow hijacking via heap spraying.\nA:H - Use-after-free through the IRQ/workqueue path can cause kernel oops/panic even without full exploitation, so availability impact is High."
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}
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]
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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/net/ieee802154/adf7242.c"
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],
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"versions": [
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{
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"lessThan": "bed12d7531df1417fc92c691999ff95e03835008",
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"status": "affected",
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"status": "affected",
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{
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"version": "58e9683d14752debc6f22daf6b23e031787df31f",
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"lessThan": "afe7116f6d3b888778ed6d95e3cf724767b9aedf",
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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": "a2363e2d88bf50022ee643c49ee5d4f7e8c915ea",
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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": "4.17.19",
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"lessThan": "4.18",
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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/net/ieee802154/adf7242.c"
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],
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"versions": [
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{
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"version": "4.18",
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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": "4.18",
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"status": "unaffected",
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},
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{
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"version": "4.19.258",
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"lessThanOrEqual": "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": "5.4.213",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.142",
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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": "5.15.66",
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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": "5.19.8",
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"lessThanOrEqual": "5.19.*",
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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": "6.0",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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"url": "https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c"
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"url": "https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485"
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{
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"url": "https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6"
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},
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{
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"url": "https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf"
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}
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],
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"title": "ieee802154/adf7242: defer destroy_workqueue call",
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