{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72005", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.898Z", "datePublished": "2026-08-15T05:51:36.005Z", "dateUpdated": "2026-10-16T15:53:15.650Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:39:22.758Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rt2x00: avoid full teardown before work setup in probe\n\nrt2x00lib_probe_dev() uses the full rt2x00lib_remove_dev() teardown for\nall probe failures. However, drv_data allocation and workqueue allocation\ncan fail before intf_work, autowakeup_work and sleep_work have been\ninitialized.\n\nDo not enter the full remove path until the probe has reached the point\nwhere those work items are set up. Return directly for drv_data allocation\nfailure, and use a small early cleanup path for workqueue allocation\nfailure.\n\nThis issue was found by our static analysis tool and then confirmed by\nmanual review of rt2x00lib_probe_dev() and rt2x00lib_remove_dev(). The\nearly probe exits should not call a common teardown path that assumes the\nlater work setup has already completed.\n\nA QEMU PoC forced alloc_ordered_workqueue() to fail before the work\ninitializers are reached. The resulting fail path entered\nrt2x00lib_remove_dev(), and DEBUG_OBJECTS reported invalid work drains with\nrt2x00lib_probe_dev() and rt2x00lib_remove_dev() in the stack." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in rt2x00 driver probe (rt2x00usb_probe/rt2x00pci_probe/rt2800soc_probe), triggered during device initialization on boot or hotplug, not by remote WiFi frames; worst case is built-in SoC/PCI WiFi on internet-facing routers/APs under local memory pressure.\nAC:L - An attacker can reliably force kzalloc or alloc_ordered_workqueue() to fail with a memory exhaustion attack and retry on reboot or USB reinsertion; success does not depend on uncontrollable layout or victim-only timing beyond attacker-driven ENOMEM.\nPR:L - Triggering probe-time ENOMEM requires only an unprivileged local process to exhaust memory during driver initialization; no CAP_NET_ADMIN, real root, or user-namespace capability is needed to reach the vulnerable teardown path.\nUI:N - Exploitation does not require a victim to click, mount, or configure anything; probe runs automatically at boot or on device hotplug while the attacker maintains memory pressure.\nS:U - Impact is confined to kernel/driver state on the host being probed; it is not a VM escape, sandbox breakout, or cross-authority boundary crossing beyond standard local kernel compromise.\nC:H - rt2x00lib_remove_dev() calls cancel_work_sync/cancel_delayed_work_sync and hrtimer_cancel on objects never initialized by INIT_WORK/hrtimer_setup, corrupting workqueue/timer metadata and creating undefined behavior that can expose kernel memory.\nI:H - Invalid cancel/flush/drain of uninitialized work items and tasklet_kill on uninitialized tasklets can corrupt adjacent kernel heap objects and workqueue state, plausibly yielding write primitives beyond a simple denial of service.\nA:H - A QEMU PoC forcing alloc_ordered_workqueue() failure hit DEBUG_OBJECTS invalid work drains in rt2x00lib_remove_dev(); this teardown path can WARN/OOPS/panic the kernel during probe failure cleanup." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ralink/rt2x00/rt2x00dev.c" ], "versions": [ { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "8b58d1f1356df6a7d2de3f55bb665b18b04ffda0", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "59afe6148927395cf86f9429900e029a48b1d42b", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "3c0427d719bddb33caf18ff4ffb77cb47de7eb00", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "eb7474d0253bb2de4793e1d3ce833e8564bbe732", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "66bd9b1a72de7c2f5141b02d796048aafaed8a49", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "816559409e340acaa5c9d868291dab30d8c80263", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "56994852d704535ea354a4627ca667b1b4fa0deb", "status": "affected", "versionType": "git" }, { "version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2", "lessThan": "536fb3d739d75a03cb318c0c6fe799425cfea501", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ralink/rt2x00/rt2x00dev.c" ], "versions": [ { "version": "2.6.39", "status": "affected" }, { "version": "0", "lessThan": "2.6.39", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "2.6.39", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8b58d1f1356df6a7d2de3f55bb665b18b04ffda0" }, { "url": "https://git.kernel.org/stable/c/59afe6148927395cf86f9429900e029a48b1d42b" }, { "url": "https://git.kernel.org/stable/c/3c0427d719bddb33caf18ff4ffb77cb47de7eb00" }, { "url": "https://git.kernel.org/stable/c/eb7474d0253bb2de4793e1d3ce833e8564bbe732" }, { "url": "https://git.kernel.org/stable/c/66bd9b1a72de7c2f5141b02d796048aafaed8a49" }, { "url": "https://git.kernel.org/stable/c/816559409e340acaa5c9d868291dab30d8c80263" }, { "url": "https://git.kernel.org/stable/c/56994852d704535ea354a4627ca667b1b4fa0deb" }, { "url": "https://git.kernel.org/stable/c/536fb3d739d75a03cb318c0c6fe799425cfea501" } ], "title": "wifi: rt2x00: avoid full teardown before work setup in probe", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-72005", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-16T15:49:49.454298Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:53:15.650Z" } } ] } }