{"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"}}]}}