{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46043","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.094Z","datePublished":"2026-05-27T12:56:57.987Z","dateUpdated":"2026-06-14T17:50:11.647Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T17:50:11.647Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv\n\nrxe_rcv() currently checks only that the incoming packet is at least\nheader_size(pkt) bytes long before payload_size() is used.\n\nHowever, payload_size() subtracts both the attacker-controlled BTH pad\nfield and RXE_ICRC_SIZE from pkt->paylen:\n\n  payload_size = pkt->paylen - offset[RXE_PAYLOAD] - bth_pad(pkt)\n                 - RXE_ICRC_SIZE\n\nThis means a short packet can still make payload_size() underflow even\nif it includes enough bytes for the fixed headers. Simply requiring\nheader_size(pkt) + RXE_ICRC_SIZE is not sufficient either, because a\npacket with a forged non-zero BTH pad can still leave payload_size()\nnegative and pass an underflowed value to later receive-path users.\n\nFix this by validating pkt->paylen against the full minimum length\nrequired by payload_size(): header_size(pkt) + bth_pad(pkt) +\nRXE_ICRC_SIZE."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/sw/rxe/rxe_recv.c"],"versions":[{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"c4376c672c3648d5bdc31dfffc329d07164f93c4","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"5fedefec757192dcaad29a664ac332c7601be144","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"2c0d71ef12f46c57d37bc571f3f2797db7eb50cc","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"2fd4f8b749309a61c3f3f88ee8891d94f79e1240","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"f83519a4c122c9c7a850a2197648a9ff4c67c520","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"9b924f3a26b21330a837cfe72e819b6393bbeeaa","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"e8ee0e792d475b1067c199ef0af1b6221fa6f43d","status":"affected","versionType":"git"},{"version":"8700e3e7c4857d28ebaa824509934556da0b3e76","lessThan":"7244491dab347f648e661da96dc0febadd9daec3","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/infiniband/sw/rxe/rxe_recv.c"],"versions":[{"version":"4.8","status":"affected"},{"version":"0","lessThan":"4.8","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.86","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.27","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","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":"4.8","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c4376c672c3648d5bdc31dfffc329d07164f93c4"},{"url":"https://git.kernel.org/stable/c/5fedefec757192dcaad29a664ac332c7601be144"},{"url":"https://git.kernel.org/stable/c/2c0d71ef12f46c57d37bc571f3f2797db7eb50cc"},{"url":"https://git.kernel.org/stable/c/2fd4f8b749309a61c3f3f88ee8891d94f79e1240"},{"url":"https://git.kernel.org/stable/c/f83519a4c122c9c7a850a2197648a9ff4c67c520"},{"url":"https://git.kernel.org/stable/c/9b924f3a26b21330a837cfe72e819b6393bbeeaa"},{"url":"https://git.kernel.org/stable/c/e8ee0e792d475b1067c199ef0af1b6221fa6f43d"},{"url":"https://git.kernel.org/stable/c/7244491dab347f648e661da96dc0febadd9daec3"}],"title":"RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv","x_generator":{"engine":"bippy-1.2.0"}}}}