{"id":"CVE-2025-37796","state":"PUBLISHED","title":"wifi: at76c50x: fix use after free access in at76_disconnect","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x: fix use after free access in at76_disconnect\n\nThe memory pointed to by priv is freed at the end of at76_delete_device\nfunction (using ieee80211_free_hw). But the code then accesses the udev\nfield of the freed object to put the USB device. This may also lead to a\nmemory leak of the usb device. Fix this by using udev from interface.","publishedAt":"2025-05-01T13:07:27.694Z","updatedAt":"2026-05-11T21:15:19.649Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"3c619aec1f538333b56746d2f796aab1bca5c9a5","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"5e7df74745700f059dc117a620e566964a2e8f2c","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"7ca513631fa6ad3011b8b9197cdde0f351103704","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"a9682bfef2cf3802515a902e964d774e137be1b9","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"152721cbae42713ecfbca6847e0f102ee6b19546","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.17","versionType":"semver"},{"version":"5.4.293","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.237","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.25","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.14.4","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"]}],"references":["https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6","https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f","https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5","https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2c","https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704","https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9","https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546","https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/37xxx/CVE-2025-37796.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37796","state":"PUBLISHED","datePublished":"2025-05-01T13:07:27.694Z","dateUpdated":"2026-05-11T21:15:19.649Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:23.941Z"},"containers":{"cna":{"title":"wifi: at76c50x: fix use after free access in at76_disconnect","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x: fix use after free access in at76_disconnect\n\nThe memory pointed to by priv is freed at the end of at76_delete_device\nfunction (using ieee80211_free_hw). But the code then accesses the udev\nfield of the freed object to put the USB device. This may also lead to a\nmemory leak of the usb device. Fix this by using udev from interface."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"3c619aec1f538333b56746d2f796aab1bca5c9a5","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"5e7df74745700f059dc117a620e566964a2e8f2c","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"7ca513631fa6ad3011b8b9197cdde0f351103704","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"a9682bfef2cf3802515a902e964d774e137be1b9","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"152721cbae42713ecfbca6847e0f102ee6b19546","versionType":"git"},{"version":"29e20aa6c6aff35c81d4da2e2cd516dadb569061","status":"affected","lessThan":"27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.17","versionType":"semver"},{"version":"5.4.293","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.237","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.25","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.14.4","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6"},{"url":"https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f"},{"url":"https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5"},{"url":"https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2c"},{"url":"https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704"},{"url":"https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9"},{"url":"https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546"},{"url":"https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:15:19.649Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.4.293"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.10.237"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.15.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.1.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.6.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.12.25"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.14.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"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":"2025-11-03T19:55:25.591Z"}}]}}}