{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50545", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-07T15:15:38.667Z", "datePublished": "2025-10-07T15:21:09.288Z", "dateUpdated": "2026-05-11T19:21:29.824Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:21:29.824Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nr6040: Fix kmemleak in probe and remove\n\nThere is a memory leaks reported by kmemleak:\n\n unreferenced object 0xffff888116111000 (size 2048):\n comm \"modprobe\", pid 817, jiffies 4294759745 (age 76.502s)\n hex dump (first 32 bytes):\n 00 c4 0a 04 81 88 ff ff 08 10 11 16 81 88 ff ff ................\n 08 10 11 16 81 88 ff ff 00 00 00 00 00 00 00 00 ................\n backtrace:\n [] kmalloc_trace+0x22/0x60\n [] phy_device_create+0x4e/0x90\n [] get_phy_device+0xd2/0x220\n [] mdiobus_scan+0xa4/0x2e0\n [] __mdiobus_register+0x482/0x8b0\n [] r6040_init_one+0x714/0xd2c [r6040]\n ...\n\nThe problem occurs in probe process as follows:\n r6040_init_one:\n mdiobus_register\n mdiobus_scan <- alloc and register phy_device,\n the reference count of phy_device is 3\n r6040_mii_probe\n phy_connect <- connect to the first phy_device,\n so the reference count of the first\n phy_device is 4, others are 3\n register_netdev <- fault inject succeeded, goto error handling path\n\n // error handling path\n err_out_mdio_unregister:\n mdiobus_unregister(lp->mii_bus);\n err_out_mdio:\n mdiobus_free(lp->mii_bus); <- the reference count of the first\n phy_device is 1, it is not released\n and other phy_devices are released\n // similarly, the remove process also has the same problem\n\nThe root cause is traced to the phy_device is not disconnected when\nremoves one r6040 device in r6040_remove_one() or on error handling path\nafter r6040_mii probed successfully. In r6040_mii_probe(), a net ethernet\ndevice is connected to the first PHY device of mii_bus, in order to\nnotify the connected driver when the link status changes, which is the\ndefault behavior of the PHY infrastructure to handle everything.\nTherefore the phy_device should be disconnected when removes one r6040\ndevice or on error handling path.\n\nFix it by adding phy_disconnect() when removes one r6040 device or on\nerror handling path after r6040_mii probed successfully." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/rdc/r6040.c" ], "versions": [ { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "a04707f4596952049da05756c27398c34d9a1d36", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "b4448816e6a565e08236a6009c6bf48c6836cdfd", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "2ce242e1b9ad31c1f68496b3548e407a8cb2c07d", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "b0a61359026b57a287a48fbb4ba1d097023eca3e", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "3d5f83a62e8235d235534b3dc6f197d8a822c269", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "9b5b50329e2e966831a7237dd6949e7b5362a49a", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "ad2c8f25457ca9a81e7e958148cbc26600ce3071", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "5944c25c67de54e0aa53623e1e1af3bf8b16ed44", "status": "affected", "versionType": "git" }, { "version": "3831861b4ad8fd0ad7110048eb3e155628799d2b", "lessThan": "7e43039a49c2da45edc1d9d7c9ede4003ab45a5f", "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/ethernet/rdc/r6040.c" ], "versions": [ { "version": "2.6.36", "status": "affected" }, { "version": "0", "lessThan": "2.6.36", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "2.6.36", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a04707f4596952049da05756c27398c34d9a1d36" }, { "url": "https://git.kernel.org/stable/c/b4448816e6a565e08236a6009c6bf48c6836cdfd" }, { "url": "https://git.kernel.org/stable/c/2ce242e1b9ad31c1f68496b3548e407a8cb2c07d" }, { "url": "https://git.kernel.org/stable/c/b0a61359026b57a287a48fbb4ba1d097023eca3e" }, { "url": "https://git.kernel.org/stable/c/3d5f83a62e8235d235534b3dc6f197d8a822c269" }, { "url": "https://git.kernel.org/stable/c/9b5b50329e2e966831a7237dd6949e7b5362a49a" }, { "url": "https://git.kernel.org/stable/c/ad2c8f25457ca9a81e7e958148cbc26600ce3071" }, { "url": "https://git.kernel.org/stable/c/5944c25c67de54e0aa53623e1e1af3bf8b16ed44" }, { "url": "https://git.kernel.org/stable/c/7e43039a49c2da45edc1d9d7c9ede4003ab45a5f" } ], "title": "r6040: Fix kmemleak in probe and remove", "x_generator": { "engine": "bippy-1.2.0" } } } }