{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63903","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T07:54:57.019Z","datePublished":"2026-07-19T14:55:10.905Z","dateUpdated":"2026-07-19T14:55:10.905Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-19T14:55:10.905Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: belkin_sa: validate interrupt status length\n\nThe Belkin interrupt callback treats interrupt data as a four-byte\nstatus report and reads LSR/MSR fields at offsets 2 and 3. The\ninterrupt-in buffer length is derived from endpoint wMaxPacketSize, and\nshort interrupt transfers may complete successfully with a smaller\nactual_length.\n\nCheck the completed interrupt packet length before parsing status\nfields so short interrupt endpoints and short successful packets are\nignored instead of causing out-of-bounds or stale status-byte reads.\n\nKASAN report as below:\n\nBUG: KASAN: slab-out-of-bounds in belkin_sa_read_int_callback()\nRead of size 1\nCall trace:\n  belkin_sa_read_int_callback() (drivers/usb/serial/belkin_sa.c:202)\n  __usb_hcd_giveback_urb() (drivers/usb/core/hcd.c:1630)\n  dummy_timer() (?:?)"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/serial/belkin_sa.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f1617539ab90e67da788959bfd314076f093a11a","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f361359a952da15e70e693c2d7dca5c5843eae3e","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"37e54d1b986df35c936d81e5b59a7aa3ec6938f0","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ffb739a49186ea784bbd9cb91b647f062395b419","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"6a4602221cba7a738442328d66a2f0b1c9bf6e17","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"22823a319fb2afdf02cacafbed8b613b757efbc8","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"db1e7eb6203d534dad64cac2c793b69e561e657b","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"4ce058df2ee02cc2a0f0fd5cd64ce6f1482a0b65","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/usb/serial/belkin_sa.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"5.10.259","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.93","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.35","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.12","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"2.6.12","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f1617539ab90e67da788959bfd314076f093a11a"},{"url":"https://git.kernel.org/stable/c/f361359a952da15e70e693c2d7dca5c5843eae3e"},{"url":"https://git.kernel.org/stable/c/37e54d1b986df35c936d81e5b59a7aa3ec6938f0"},{"url":"https://git.kernel.org/stable/c/ffb739a49186ea784bbd9cb91b647f062395b419"},{"url":"https://git.kernel.org/stable/c/6a4602221cba7a738442328d66a2f0b1c9bf6e17"},{"url":"https://git.kernel.org/stable/c/22823a319fb2afdf02cacafbed8b613b757efbc8"},{"url":"https://git.kernel.org/stable/c/db1e7eb6203d534dad64cac2c793b69e561e657b"},{"url":"https://git.kernel.org/stable/c/4ce058df2ee02cc2a0f0fd5cd64ce6f1482a0b65"}],"title":"USB: serial: belkin_sa: validate interrupt status length","x_generator":{"engine":"bippy-1.2.0"}}}}