{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49385", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.560Z", "datePublished": "2025-02-26T02:11:20.725Z", "dateUpdated": "2026-08-05T08:54:58.796Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:54:58.796Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver: base: fix UAF when driver_attach failed\n\nWhen driver_attach(drv); failed, the driver_private will be freed.\nBut it has been added to the bus, which caused a UAF.\n\nTo fix it, we need to delete it from the bus when failed." } ], "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 vulnerable path is bus_add_driver() in the local driver core, reached via driver_register() during module load/autoload or privileged driver bind—not via network packet processing or adjacent-link protocols.\nAC:L - Once driver_attach() returns an error, kobject_put frees driver_private while knode_bus remains linked on klist_drivers with no get/put callbacks, leaving a permanent dangling list node; subsequent bus_for_each_drv()/device_attach iteration hits the UAF deterministically with no race the attacker must win.\nPR:L - Although direct init_module requires CAP_SYS_MODULE, unprivileged local users can trigger module autoload (request_module via sockets, filesystems, etc.) so that modprobe runs driver_register() in kernel context, and after the dangling entry is planted any local user can exercise bus driver iteration; when uncertain, Low is required over High.\nUI:N - The attacker triggers driver registration and later bus_for_each_drv use themselves through local operations; no separate victim action such as mounting a filesystem or opening a crafted file is required.\nS:U - Impact is use-after-free of kernel driver_private within the host kernel’s driver-core lists, enabling standard local privilege escalation in the same security authority without VM escape or IOMMU/sandbox boundary crossing.\nC:H - Use-after-free of the kmalloc’d driver_private (containing kobject and driver pointer) allows heap reuse and arbitrary kernel memory disclosure when next_driver()/bus_for_each_drv walks the dangling knode, scored Confidentiality High per UAF guidance.\nI:H - The same UAF on a list-linked slab object enables heap spraying and corruption of adjacent kernel objects or control-flow hijack when driver matching/probe paths dereference the reclaimed driver_private, scored Integrity High.\nA:H - Walking a freed klist_node or dereferencing drv_priv->driver after free can oops/panic the kernel 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/base/bus.c" ], "versions": [ { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "5d709f58c743166fe1c6914b9de0ae8868600d9b", "status": "affected", "versionType": "git" }, { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "823f24f2e329babd0330200d0b74882516fe57f4", "status": "affected", "versionType": "git" }, { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "cdf1a683a01583bca4b618dd16223cbd6e462e21", "status": "affected", "versionType": "git" }, { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "5389101257828d1913d713d9a40acbe14f5961df", "status": "affected", "versionType": "git" }, { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "c059665c84feab46b7173d3a1bf36c2fb7f9df86", "status": "affected", "versionType": "git" }, { "version": "190888ac01d059e38ffe77a2291d44cafa9016fb", "lessThan": "310862e574001a97ad02272bac0fd13f75f42a27", "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/base/bus.c" ], "versions": [ { "version": "3.9", "status": "affected" }, { "version": "0", "lessThan": "3.9", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.198", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.122", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.47", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.15", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.4", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "3.9", "versionEndExcluding": "5.4.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.10.122" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.15.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.17.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.18.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5d709f58c743166fe1c6914b9de0ae8868600d9b" }, { "url": "https://git.kernel.org/stable/c/823f24f2e329babd0330200d0b74882516fe57f4" }, { "url": "https://git.kernel.org/stable/c/cdf1a683a01583bca4b618dd16223cbd6e462e21" }, { "url": "https://git.kernel.org/stable/c/5389101257828d1913d713d9a40acbe14f5961df" }, { "url": "https://git.kernel.org/stable/c/c059665c84feab46b7173d3a1bf36c2fb7f9df86" }, { "url": "https://git.kernel.org/stable/c/310862e574001a97ad02272bac0fd13f75f42a27" } ], "title": "driver: base: fix UAF when driver_attach failed", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49385", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-27T17:58:41.954887Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T18:02:28.951Z" } } ] } }