{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-49501","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:08:31.586Z","datePublished":"2025-02-26T02:13:34.885Z","dateUpdated":"2025-07-17T16:56:35.614Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-07-17T16:56:35.614Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Run unregister_netdev() before unbind() again\n\nCommit 2c9d6c2b871d (\"usbnet: run unbind() before unregister_netdev()\")\nsought to fix a use-after-free on disconnect of USB Ethernet adapters.\n\nIt turns out that a different fix is necessary to address the issue:\nhttps://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/\n\nSo the commit was not necessary.\n\nThe commit made binding and unbinding of USB Ethernet asymmetrical:\nBefore, usbnet_probe() first invoked the ->bind() callback and then\nregister_netdev().  usbnet_disconnect() mirrored that by first invoking\nunregister_netdev() and then ->unbind().\n\nSince the commit, the order in usbnet_disconnect() is reversed and no\nlonger mirrors usbnet_probe().\n\nOne consequence is that a PHY disconnected (and stopped) in ->unbind()\nis afterwards stopped once more by unregister_netdev() as it closes the\nnetdev before unregistering.  That necessitates a contortion in ->stop()\nbecause the PHY may only be stopped if it hasn't already been\ndisconnected.\n\nReverting the commit allows making the call to phy_stop() unconditional\nin ->stop()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/asix_devices.c","drivers/net/usb/smsc95xx.c","drivers/net/usb/usbnet.c"],"versions":[{"version":"2c9d6c2b871d5841ce26ede3e81fd37e2e33c42c","lessThan":"6d5deb242874d924beccf7eb3cef04c1c3b0da79","status":"affected","versionType":"git"},{"version":"2c9d6c2b871d5841ce26ede3e81fd37e2e33c42c","lessThan":"fbda837107f9bd4ec658d2aa88c6856dba606f06","status":"affected","versionType":"git"},{"version":"2c9d6c2b871d5841ce26ede3e81fd37e2e33c42c","lessThan":"969a1b3ea3cb7d58a16fe12fd1b04bfc0ea40509","status":"affected","versionType":"git"},{"version":"2c9d6c2b871d5841ce26ede3e81fd37e2e33c42c","lessThan":"d1408f6b4dd78fb1b9e26bcf64477984e5f85409","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/usb/asix_devices.c","drivers/net/usb/smsc95xx.c","drivers/net/usb/usbnet.c"],"versions":[{"version":"5.14","status":"affected"},{"version":"0","lessThan":"5.14","status":"unaffected","versionType":"semver"},{"version":"5.15.46","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.17.14","lessThanOrEqual":"5.17.*","status":"unaffected","versionType":"semver"},{"version":"5.18.3","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":"5.14","versionEndExcluding":"5.15.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.17.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6d5deb242874d924beccf7eb3cef04c1c3b0da79"},{"url":"https://git.kernel.org/stable/c/fbda837107f9bd4ec658d2aa88c6856dba606f06"},{"url":"https://git.kernel.org/stable/c/969a1b3ea3cb7d58a16fe12fd1b04bfc0ea40509"},{"url":"https://git.kernel.org/stable/c/d1408f6b4dd78fb1b9e26bcf64477984e5f85409"}],"title":"usbnet: Run unregister_netdev() before unbind() again","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-2022-49501","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-02-27T18:15:41.764586Z"}}}],"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":"2025-02-27T18:22:32.026Z"}}]}}