{"id":"CVE-2025-21917","state":"PUBLISHED","title":"usb: renesas_usbhs: Flush the notify_hotplug_work","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: Flush the notify_hotplug_work\n\nWhen performing continuous unbind/bind operations on the USB drivers\navailable on the Renesas RZ/G2L SoC, a kernel crash with the message\n\"Unable to handle kernel NULL pointer dereference at virtual address\"\nmay occur. This issue points to the usbhsc_notify_hotplug() function.\n\nFlush the delayed work to avoid its execution when driver resources are\nunavailable.","publishedAt":"2025-04-01T15:40:53.042Z","updatedAt":"2026-05-11T21:09:01.951Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"4cd847a7b630a85493d0294ad9542c21aafaa246","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"394965f90454d6f00fe11879142b720c6c1a872e","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"3248c1f833f924246cb98ce7da4569133c1b2292","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"4ca078084cdd5f32d533311d6a0b63a60dcadd41","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"d50f5c0cd949593eb9a3d822b34d7b50046a06b7","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"e5aac1c9b2974636db7ce796ffa6de88fa08335e","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"830818c8e70c0364e377f0c243b28061ef7967eb","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"552ca6b87e3778f3dd5b87842f95138162e16c82","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/renesas_usbhs/common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"5.4.291","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.235","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.179","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.131","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.83","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.19","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.7","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/renesas_usbhs/common.c"]}],"references":["https://git.kernel.org/stable/c/4cd847a7b630a85493d0294ad9542c21aafaa246","https://git.kernel.org/stable/c/394965f90454d6f00fe11879142b720c6c1a872e","https://git.kernel.org/stable/c/3248c1f833f924246cb98ce7da4569133c1b2292","https://git.kernel.org/stable/c/4ca078084cdd5f32d533311d6a0b63a60dcadd41","https://git.kernel.org/stable/c/d50f5c0cd949593eb9a3d822b34d7b50046a06b7","https://git.kernel.org/stable/c/e5aac1c9b2974636db7ce796ffa6de88fa08335e","https://git.kernel.org/stable/c/830818c8e70c0364e377f0c243b28061ef7967eb","https://git.kernel.org/stable/c/552ca6b87e3778f3dd5b87842f95138162e16c82","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21917.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21917","state":"PUBLISHED","datePublished":"2025-04-01T15:40:53.042Z","dateUpdated":"2026-05-11T21:09:01.951Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.787Z"},"containers":{"cna":{"title":"usb: renesas_usbhs: Flush the notify_hotplug_work","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: Flush the notify_hotplug_work\n\nWhen performing continuous unbind/bind operations on the USB drivers\navailable on the Renesas RZ/G2L SoC, a kernel crash with the message\n\"Unable to handle kernel NULL pointer dereference at virtual address\"\nmay occur. This issue points to the usbhsc_notify_hotplug() function.\n\nFlush the delayed work to avoid its execution when driver resources are\nunavailable."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"4cd847a7b630a85493d0294ad9542c21aafaa246","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"394965f90454d6f00fe11879142b720c6c1a872e","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"3248c1f833f924246cb98ce7da4569133c1b2292","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"4ca078084cdd5f32d533311d6a0b63a60dcadd41","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"d50f5c0cd949593eb9a3d822b34d7b50046a06b7","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"e5aac1c9b2974636db7ce796ffa6de88fa08335e","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"830818c8e70c0364e377f0c243b28061ef7967eb","versionType":"git"},{"version":"bc57381e634782009b1cb2e86b18013699ada576","status":"affected","lessThan":"552ca6b87e3778f3dd5b87842f95138162e16c82","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/renesas_usbhs/common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"5.4.291","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.235","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.179","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.131","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.83","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.19","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.7","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/renesas_usbhs/common.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4cd847a7b630a85493d0294ad9542c21aafaa246"},{"url":"https://git.kernel.org/stable/c/394965f90454d6f00fe11879142b720c6c1a872e"},{"url":"https://git.kernel.org/stable/c/3248c1f833f924246cb98ce7da4569133c1b2292"},{"url":"https://git.kernel.org/stable/c/4ca078084cdd5f32d533311d6a0b63a60dcadd41"},{"url":"https://git.kernel.org/stable/c/d50f5c0cd949593eb9a3d822b34d7b50046a06b7"},{"url":"https://git.kernel.org/stable/c/e5aac1c9b2974636db7ce796ffa6de88fa08335e"},{"url":"https://git.kernel.org/stable/c/830818c8e70c0364e377f0c243b28061ef7967eb"},{"url":"https://git.kernel.org/stable/c/552ca6b87e3778f3dd5b87842f95138162e16c82"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:09:01.951Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.4.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.10.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.15.179"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.1.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.6.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.12.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.13.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":{"id":"CVE-2025-21917","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:24:08.656222Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:26:34.122Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T19:39:08.336Z"}}]}}}