{"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      [<ffffffff815bcd82>] kmalloc_trace+0x22/0x60\n      [<ffffffff827e20ee>] phy_device_create+0x4e/0x90\n      [<ffffffff827e6072>] get_phy_device+0xd2/0x220\n      [<ffffffff827e7844>] mdiobus_scan+0xa4/0x2e0\n      [<ffffffff827e8be2>] __mdiobus_register+0x482/0x8b0\n      [<ffffffffa01f5d24>] 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"}}}}