CVE-2022-49968

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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\")"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "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\u2014no local Linux credentials or CAP_NET_ADMIN\u2014while 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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ieee802154/adf7242.c"], "versions": [{"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "dede80aaf01f4b6e8657d23726cb4a3da226ec4c", "status": "affected", "versionType": "git"}, {"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "bed12d7531df1417fc92c691999ff95e03835008", "status": "affected", "versionType": "git"}, {"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "23a29932715ca43bceb2eae1bdb770995afe7271", "status": "affected", "versionType": "git"}, {"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "9f8558c5c642c62c450c98c99b7d18a709fff485", "status": "affected", "versionType": "git"}, {"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "15f3b89bd521d5770d36a61fc04a77c293138ba6", "status": "affected", "versionType": "git"}, {"version": "58e9683d14752debc6f22daf6b23e031787df31f", "lessThan": "afe7116f6d3b888778ed6d95e3cf724767b9aedf", "status": "affected", "versionType": "git"}, {"version": "a2363e2d88bf50022ee643c49ee5d4f7e8c915ea", "status": "affected", "versionType": "git"}, {"version": "4.17.19", "lessThan": "4.18", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ieee802154/adf7242.c"], "versions": [{"version": "4.18", "status": "affected"}, {"version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.258", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.213", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.142", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.66", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.8", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "4.19.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.4.213"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.10.142"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.15.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.19.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c"}, {"url": "https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008"}, {"url": "https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271"}, {"url": "https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485"}, {"url": "https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6"}, {"url": "https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf"}], "title": "ieee802154/adf7242: defer destroy_workqueue call", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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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\")"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ieee802154/adf7242: aplazar la llamada a destroy_workqueue Existe una posible condici\u00f3n de ejecuci\u00f3n (use-after-free) como la siguiente (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | La causa ra\u00edz de esta ejecuci\u00f3n es que la capa superior (ieee802154) desconoce este evento de desconexi\u00f3n y la funci\u00f3n adf7242_channel se puede llamar sin ninguna comprobaci\u00f3n. Para solucionar esto, podemos a\u00f1adir una escritura de bandera al principio de adf7242_remove y a\u00f1adir la comprobaci\u00f3n de bandera en adf7242_channel. O podemos simplemente aplazar la operaci\u00f3n destructiva como en el commit 3e0588c291d6 (\"hamradio: defer ax25 kfree after unregister_netdev\"), que permite que ieee802154_unregister_hw() gestione la sincronizaci\u00f3n. Este parche utiliza la segunda opci\u00f3n."}], "id": "CVE-2022-49968", "lastModified": "2026-08-04T10:18:01.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T11:15:24.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ieee802154/adf7242: defer destroy_workqueue call", "id": "2373452", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373452"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nieee802154/adf7242: defer destroy_workqueue call\nThere is a possible race condition (use-after-free) like below\n(FREE) | (USE)\nadf7242_remove | adf7242_channel\ncancel_delayed_work_sync |\ndestroy_workqueue (1) | adf7242_cmd_rx\n| mod_delayed_work (2)\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.\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.\nruns\")"], "name": "CVE-2022-49968", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49968\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49968\nhttps://lore.kernel.org/linux-cve-announce/2025061816-CVE-2022-49968-6e78@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-23T08:36:33.814991+00:00", "updated": "2025-06-23T08:36:33.815031+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}