{"id":"CVE-2025-68734","state":"PUBLISHED","title":"isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nisdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()\n\nIn hfcsusb_probe(), the memory allocated for ctrl_urb gets leaked when\nsetup_instance() fails with an error code. Fix that by freeing the urb\nbefore freeing the hw structure. Also change the error paths to use the\ngoto ladder style.\n\nCompile tested only. Issue found using a prototype static analysis tool.","publishedAt":"2025-12-24T10:58:49.938Z","updatedAt":"2026-05-11T21:52:18.618Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"475032fa2bb82ffb592c321885e917e39f47357f","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"adb7577e23a431fc53aa1b6107733c0d751015fb","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"b70c24827e11fdc71465f9207e974526fb457bb9","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"3f7c72bc73c4e542fde14cce017549d8a0b61a3c","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"03695541b3349bc40bf5d6563d44d6147fb20260","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"6dce43433e0635e7b00346bc937b69ce48ea71bb","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"ea7936304ed74ab7f965d17f942a173ce91a5ca8","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"3f978e3f1570155a1327ffa25f60968bc7b9398f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/hardware/mISDN/hfcsusb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.4.302","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.59","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.9","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/hardware/mISDN/hfcsusb.c"]}],"references":["https://git.kernel.org/stable/c/475032fa2bb82ffb592c321885e917e39f47357f","https://git.kernel.org/stable/c/adb7577e23a431fc53aa1b6107733c0d751015fb","https://git.kernel.org/stable/c/b70c24827e11fdc71465f9207e974526fb457bb9","https://git.kernel.org/stable/c/3f7c72bc73c4e542fde14cce017549d8a0b61a3c","https://git.kernel.org/stable/c/03695541b3349bc40bf5d6563d44d6147fb20260","https://git.kernel.org/stable/c/6dce43433e0635e7b00346bc937b69ce48ea71bb","https://git.kernel.org/stable/c/ea7936304ed74ab7f965d17f942a173ce91a5ca8","https://git.kernel.org/stable/c/3f978e3f1570155a1327ffa25f60968bc7b9398f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68734.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68734","state":"PUBLISHED","datePublished":"2025-12-24T10:58:49.938Z","dateUpdated":"2026-05-11T21:52:18.618Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.028Z"},"containers":{"cna":{"title":"isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nisdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()\n\nIn hfcsusb_probe(), the memory allocated for ctrl_urb gets leaked when\nsetup_instance() fails with an error code. Fix that by freeing the urb\nbefore freeing the hw structure. Also change the error paths to use the\ngoto ladder style.\n\nCompile tested only. Issue found using a prototype static analysis tool."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"475032fa2bb82ffb592c321885e917e39f47357f","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"adb7577e23a431fc53aa1b6107733c0d751015fb","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"b70c24827e11fdc71465f9207e974526fb457bb9","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"3f7c72bc73c4e542fde14cce017549d8a0b61a3c","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"03695541b3349bc40bf5d6563d44d6147fb20260","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"6dce43433e0635e7b00346bc937b69ce48ea71bb","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"ea7936304ed74ab7f965d17f942a173ce91a5ca8","versionType":"git"},{"version":"69f52adb2d534afc41fcc658f155e01f0b322f9e","status":"affected","lessThan":"3f978e3f1570155a1327ffa25f60968bc7b9398f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/hardware/mISDN/hfcsusb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.4.302","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.59","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.9","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/hardware/mISDN/hfcsusb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/475032fa2bb82ffb592c321885e917e39f47357f"},{"url":"https://git.kernel.org/stable/c/adb7577e23a431fc53aa1b6107733c0d751015fb"},{"url":"https://git.kernel.org/stable/c/b70c24827e11fdc71465f9207e974526fb457bb9"},{"url":"https://git.kernel.org/stable/c/3f7c72bc73c4e542fde14cce017549d8a0b61a3c"},{"url":"https://git.kernel.org/stable/c/03695541b3349bc40bf5d6563d44d6147fb20260"},{"url":"https://git.kernel.org/stable/c/6dce43433e0635e7b00346bc937b69ce48ea71bb"},{"url":"https://git.kernel.org/stable/c/ea7936304ed74ab7f965d17f942a173ce91a5ca8"},{"url":"https://git.kernel.org/stable/c/3f978e3f1570155a1327ffa25f60968bc7b9398f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:52:18.618Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.4.302"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.247"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.17.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}