{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49926", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.253Z", "datePublished": "2025-05-01T14:11:04.691Z", "dateUpdated": "2026-05-11T19:09:23.124Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:09:23.124Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: Fix possible memory leaks in dsa_loop_init()\n\nkmemleak reported memory leaks in dsa_loop_init():\n\nkmemleak: 12 new suspected memory leaks\n\nunreferenced object 0xffff8880138ce000 (size 2048):\n comm \"modprobe\", pid 390, jiffies 4295040478 (age 238.976s)\n backtrace:\n [<000000006a94f1d5>] kmalloc_trace+0x26/0x60\n [<00000000a9c44622>] phy_device_create+0x5d/0x970\n [<00000000d0ee2afc>] get_phy_device+0xf3/0x2b0\n [<00000000dca0c71f>] __fixed_phy_register.part.0+0x92/0x4e0\n [<000000008a834798>] fixed_phy_register+0x84/0xb0\n [<0000000055223fcb>] dsa_loop_init+0xa9/0x116 [dsa_loop]\n ...\n\nThere are two reasons for memleak in dsa_loop_init().\n\nFirst, fixed_phy_register() create and register phy_device:\n\nfixed_phy_register()\n get_phy_device()\n phy_device_create() # freed by phy_device_free()\n phy_device_register() # freed by phy_device_remove()\n\nBut fixed_phy_unregister() only calls phy_device_remove().\nSo the memory allocated in phy_device_create() is leaked.\n\nSecond, when mdio_driver_register() fail in dsa_loop_init(),\nit just returns and there is no cleanup for phydevs.\n\nFix the problems by catching the error of mdio_driver_register()\nin dsa_loop_init(), then calling both fixed_phy_unregister() and\nphy_device_free() to release phydevs.\nAlso add a function for phydevs cleanup to avoid duplacate." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/dsa/dsa_loop.c" ], "versions": [ { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "935b4beb724946a37cebf97191592d4879d3a3a3", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "d593e1ede655b74c42e4e4fe285ea64aee96fb5c", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "37a098fc9b42bd7fce66764866aa514639667b6e", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "4d2024b138d9f7b02ae13ee997fd3a71e9e46254", "status": "affected", "versionType": "git" }, { "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "633efc8b3dc96f56f5a57f2a49764853a2fa3f50", "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/dsa/dsa_loop.c" ], "versions": [ { "version": "4.12", "status": "affected" }, { "version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.299", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.265", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.224", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.154", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.8", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "4.12", "versionEndExcluding": "4.14.299" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "4.19.265" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.4.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.10.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.15.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.0.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/935b4beb724946a37cebf97191592d4879d3a3a3" }, { "url": "https://git.kernel.org/stable/c/d593e1ede655b74c42e4e4fe285ea64aee96fb5c" }, { "url": "https://git.kernel.org/stable/c/bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f" }, { "url": "https://git.kernel.org/stable/c/37a098fc9b42bd7fce66764866aa514639667b6e" }, { "url": "https://git.kernel.org/stable/c/9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7" }, { "url": "https://git.kernel.org/stable/c/4d2024b138d9f7b02ae13ee997fd3a71e9e46254" }, { "url": "https://git.kernel.org/stable/c/633efc8b3dc96f56f5a57f2a49764853a2fa3f50" } ], "title": "net: dsa: Fix possible memory leaks in dsa_loop_init()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-401", "lang": "en", "description": "CWE-401 Missing Release of Memory after Effective Lifetime" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-10-01T14:56:55.465570Z", "id": "CVE-2022-49926", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T14:56:58.099Z" } } ] } }