{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-21916", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21916", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-04-01T15:40:52.519Z", "updatedAt": "2026-05-23T15:57:26.891Z", "importedAt": "2026-10-24T01:57:29.455Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "usb: atm: cxacru: fix a flaw in existing endpoint checks", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: atm: cxacru: fix a flaw in existing endpoint checks\n\nSyzbot once again identified a flaw in usb endpoint checking, see [1].\nThis time the issue stems from a commit authored by me (2eabb655a968\n(\"usb: atm: cxacru: fix endpoint checking in cxacru_bind()\")).\n\nWhile using usb_find_common_endpoints() may usually be enough to\ndiscard devices with wrong endpoints, in this case one needs more\nthan just finding and identifying the sufficient number of endpoints\nof correct types - one needs to check the endpoint's address as well.\n\nSince cxacru_bind() fills URBs with CXACRU_EP_CMD address in mind,\nswitch the endpoint verification approach to usb_check_XXX_endpoints()\ninstead to fix incomplete ep testing.\n\n[1] Syzbot report:\nusb 5-1: BOGUS urb xfer, pipe 3 != type 1\nWARNING: CPU: 0 PID: 1378 at drivers/usb/core/urb.c:504 usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503\n...\nRIP: 0010:usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503\n...\nCall Trace:\n \n cxacru_cm+0x3c8/0xe50 drivers/usb/atm/cxacru.c:649\n cxacru_card_status drivers/usb/atm/cxacru.c:760 [inline]\n cxacru_bind+0xcf9/0x1150 drivers/usb/atm/cxacru.c:1223\n usbatm_usb_probe+0x314/0x1d30 drivers/usb/atm/usbatm.c:1058\n cxacru_usb_probe+0x184/0x220 drivers/usb/atm/cxacru.c:1377\n usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396\n really_probe+0x2b9/0xad0 drivers/base/dd.c:658\n __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800\n driver_probe_device+0x50/0x430 drivers/base/dd.c:830\n...", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "23926d316d2836315cb113569f91393266eb5b47", "status": "affected", "versionType": "git", "lessThan": "dcd592ab9dd8a2bfc36e75583b9006db2a77ec24" }, { "version": "75ddbf776dd04a09fb9e5267ead5d0c989f84506", "status": "affected", "versionType": "git", "lessThan": "319529e0356bd904528c64647725a2272d297c83" }, { "version": "1aac4be1aaa5177506219f01dce5e29194e5e95a", "status": "affected", "versionType": "git", "lessThan": "bf4409f84023b52b5e9b36c0a071a121eee42138" }, { "version": "5584c776a1af7807ca815ee6265f2c1429fc5727", "status": "affected", "versionType": "git", "lessThan": "197e78076c5ecd895f109158c4ea2954b9919af6" }, { "version": "f536f09eb45e4de8d1b9accee9d992aa1846f1d4", "status": "affected", "versionType": "git", "lessThan": "a0475a885d69849b1ade38add6d64338dfa83a8f" }, { "version": "2eabb655a968b862bc0c31629a09f0fbf3c80d51", "status": "affected", "versionType": "git", "lessThan": "cfc295f7cccf66cbd5123416bcf1bee2e1bd37de" }, { "version": "2eabb655a968b862bc0c31629a09f0fbf3c80d51", "status": "affected", "versionType": "git", "lessThan": "903b80c21458bb1e34c3a78c5fdc553821e357f8" }, { "version": "2eabb655a968b862bc0c31629a09f0fbf3c80d51", "status": "affected", "versionType": "git", "lessThan": "c90aad369899a607cfbc002bebeafd51e31900cd" }, { "version": "5159a81924311c1ec786ad9fdef784ead8676a6a", "status": "affected", "versionType": "git" }, { "version": "ac9007520e392541a29daebaae8b9109007bc781", "status": "affected", "versionType": "git" }, { "version": "5.4.279", "status": "affected", "versionType": "semver", "lessThan": "5.4.291" }, { "version": "5.10.221", "status": "affected", "versionType": "semver", "lessThan": "5.10.235" }, { "version": "5.15.162", "status": "affected", "versionType": "semver", "lessThan": "5.15.179" }, { "version": "6.1.97", "status": "affected", "versionType": "semver", "lessThan": "6.1.131" }, { "version": "6.6.37", "status": "affected", "versionType": "semver", "lessThan": "6.6.83" }, { "version": "4.19.317", "status": "affected", "versionType": "semver", "lessThan": "4.20" }, { "version": "6.9.8", "status": "affected", "versionType": "semver", "lessThan": "6.10" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.10" }, { "version": "5.4.291", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.235", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.179", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.131", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.83", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.19", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.13.*" }, { "version": "6.14", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }