{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64351","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.782Z","datePublished":"2026-07-25T08:50:10.882Z","dateUpdated":"2026-08-17T04:53:56.750Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:53:56.750Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: kalmia: bound RX frame length in kalmia_rx_fixup()\n\nkalmia_rx_fixup() computes usb_packet_length = skb->len - (2 *\nKALMIA_HEADER_LENGTH) as a u16, guarded only by a pre-loop check that\nskb->len is at least KALMIA_HEADER_LENGTH, which is 6. A device can\ndeliver a short bulk-IN frame with skb->len in the 6 to 11 range, or\nleave a short trailing remainder on a later loop iteration. Either case\nunderflows usb_packet_length to about 65530.\n\nThat bypasses the usb_packet_length < ether_packet_length truncation path.\nThe device-supplied ether_packet_length, a le16 up to 65535 read from\nheader_start[2], then drives a memcmp() and the following skb_trim() and\nskb_pull() past the end of the rx buffer. The rx buffer is hard_mtu * 10,\nwhich is 14000 bytes. That is an out of bounds read.\n\nRequire both the start and end framing headers to be present before\nsubtracting them, on every loop iteration."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/kalmia.c"],"versions":[{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"391706889a5112feafdc0c68db3ecc7ed325d09c","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"aa4eef2cbb66ea3dfcfc24bdce798dd78a81b54b","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"2d04c37ed4e1d0f733ad39ec35b5a5d8818b4f4a","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"46ab32870d010e9a057bc5659cea22b7e728ca88","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"c466097d85d52f3aa200736cb4759e66d4bbf6e3","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"e24eb271061db384a3c3ef6f107fe515e68ef222","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"51e65f1d78457ea4f9513d90ab22c9dccbb35110","status":"affected","versionType":"git"},{"version":"d40261236e8e278cb1936cb5e934262971692b10","lessThan":"47b6bcef6e679593d2e86e04ee72c46a4e2f7139","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/net/usb/kalmia.c"],"versions":[{"version":"3.0","status":"affected"},{"version":"0","lessThan":"3.0","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"3.0","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/391706889a5112feafdc0c68db3ecc7ed325d09c"},{"url":"https://git.kernel.org/stable/c/aa4eef2cbb66ea3dfcfc24bdce798dd78a81b54b"},{"url":"https://git.kernel.org/stable/c/2d04c37ed4e1d0f733ad39ec35b5a5d8818b4f4a"},{"url":"https://git.kernel.org/stable/c/46ab32870d010e9a057bc5659cea22b7e728ca88"},{"url":"https://git.kernel.org/stable/c/c466097d85d52f3aa200736cb4759e66d4bbf6e3"},{"url":"https://git.kernel.org/stable/c/e24eb271061db384a3c3ef6f107fe515e68ef222"},{"url":"https://git.kernel.org/stable/c/51e65f1d78457ea4f9513d90ab22c9dccbb35110"},{"url":"https://git.kernel.org/stable/c/47b6bcef6e679593d2e86e04ee72c46a4e2f7139"}],"title":"net: usb: kalmia: bound RX frame length in kalmia_rx_fixup()","x_generator":{"engine":"bippy-1.2.0"}}}}