{"api_version":"1","generated_at":"2026-07-28T01:57:44+00:00","cve":"CVE-2026-64550","urls":{"html":"https://cve.report/CVE-2026-64550","api":"https://cve.report/api/cve/CVE-2026-64550.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64550","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64550"},"summary":{"title":"net: qualcomm: rmnet: validate MAP frame length before ingress parsing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qualcomm: rmnet: validate MAP frame length before ingress parsing\n\nWhen ingress deaggregation is disabled, rmnet_map_ingress_handler() passes\nthe skb straight to __rmnet_map_ingress_handler(), skipping the length\nvalidation that rmnet_map_deaggregate() performs on the aggregated path.\nThe parser then dereferences the MAP header and csum header/trailer based on\nthe on-wire pkt_len without checking skb->len, so a short frame is read out\nof bounds:\n\n  BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet\n  Read of size 1 at addr ffff88801118ed00 by task exploit/147\n  Call Trace:\n   ...\n   rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413)\n   __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96)\n   rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129)\n   __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089)\n   netif_receive_skb (net/core/dev.c:6460)\n   tun_get_user (drivers/net/tun.c:1955)\n   tun_chr_write_iter (drivers/net/tun.c:2001)\n   vfs_write (fs/read_write.c:688)\n   ksys_write (fs/read_write.c:740)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   ...\n\nFactor that validation out of rmnet_map_deaggregate() into\nrmnet_map_validate_packet_len() and run it on the no-aggregation path too.\nThe MAP header is bounds-checked first, since this path can receive a frame\nshorter than the header.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-27 21:17:07","updated_at":"2026-07-27 21:17:07"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a54d76d176e50d2fdbd39b7231efe256170339e4","name":"https://git.kernel.org/stable/c/a54d76d176e50d2fdbd39b7231efe256170339e4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1b12612c367e4be9b0814c0468e7e687835315b4","name":"https://git.kernel.org/stable/c/1b12612c367e4be9b0814c0468e7e687835315b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ed25befc8c36f896b5878f9078faddb67fd7e2d0","name":"https://git.kernel.org/stable/c/ed25befc8c36f896b5878f9078faddb67fd7e2d0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/00f4c366dbca16a40772c3b7ec2d8cba839e9724","name":"https://git.kernel.org/stable/c/00f4c366dbca16a40772c3b7ec2d8cba839e9724","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/14eb0c9491385d5361a292ea4974aec0e6887299","name":"https://git.kernel.org/stable/c/14eb0c9491385d5361a292ea4974aec0e6887299","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/231a8a4b76cb1b1827b3b19d7b3603642f5aaaef","name":"https://git.kernel.org/stable/c/231a8a4b76cb1b1827b3b19d7b3603642f5aaaef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3868c3244369ab709a90c9aad7534d406009b824","name":"https://git.kernel.org/stable/c/3868c3244369ab709a90c9aad7534d406009b824","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0f1887a9e30712a1df03e152dce6fb91344b1f3","name":"https://git.kernel.org/stable/c/f0f1887a9e30712a1df03e152dce6fb91344b1f3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64550","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64550","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d ed25befc8c36f896b5878f9078faddb67fd7e2d0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d a54d76d176e50d2fdbd39b7231efe256170339e4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d 00f4c366dbca16a40772c3b7ec2d8cba839e9724 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d 3868c3244369ab709a90c9aad7534d406009b824 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d 14eb0c9491385d5361a292ea4974aec0e6887299 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d 1b12612c367e4be9b0814c0468e7e687835315b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d 231a8a4b76cb1b1827b3b19d7b3603642f5aaaef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ceed73a2cf4aff2921802aa3d21d45280677547d f0f1887a9e30712a1df03e152dce6fb91344b1f3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c","drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h","drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ed25befc8c36f896b5878f9078faddb67fd7e2d0","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"a54d76d176e50d2fdbd39b7231efe256170339e4","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"00f4c366dbca16a40772c3b7ec2d8cba839e9724","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"3868c3244369ab709a90c9aad7534d406009b824","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"14eb0c9491385d5361a292ea4974aec0e6887299","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"1b12612c367e4be9b0814c0468e7e687835315b4","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"231a8a4b76cb1b1827b3b19d7b3603642f5aaaef","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"},{"lessThan":"f0f1887a9e30712a1df03e152dce6fb91344b1f3","status":"affected","version":"ceed73a2cf4aff2921802aa3d21d45280677547d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c","drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h","drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qualcomm: rmnet: validate MAP frame length before ingress parsing\n\nWhen ingress deaggregation is disabled, rmnet_map_ingress_handler() passes\nthe skb straight to __rmnet_map_ingress_handler(), skipping the length\nvalidation that rmnet_map_deaggregate() performs on the aggregated path.\nThe parser then dereferences the MAP header and csum header/trailer based on\nthe on-wire pkt_len without checking skb->len, so a short frame is read out\nof bounds:\n\n  BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet\n  Read of size 1 at addr ffff88801118ed00 by task exploit/147\n  Call Trace:\n   ...\n   rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413)\n   __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96)\n   rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129)\n   __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089)\n   netif_receive_skb (net/core/dev.c:6460)\n   tun_get_user (drivers/net/tun.c:1955)\n   tun_chr_write_iter (drivers/net/tun.c:2001)\n   vfs_write (fs/read_write.c:688)\n   ksys_write (fs/read_write.c:740)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   ...\n\nFactor that validation out of rmnet_map_deaggregate() into\nrmnet_map_validate_packet_len() and run it on the no-aggregation path too.\nThe MAP header is bounds-checked first, since this path can receive a frame\nshorter than the header."}],"providerMetadata":{"dateUpdated":"2026-07-27T20:10:39.459Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ed25befc8c36f896b5878f9078faddb67fd7e2d0"},{"url":"https://git.kernel.org/stable/c/a54d76d176e50d2fdbd39b7231efe256170339e4"},{"url":"https://git.kernel.org/stable/c/00f4c366dbca16a40772c3b7ec2d8cba839e9724"},{"url":"https://git.kernel.org/stable/c/3868c3244369ab709a90c9aad7534d406009b824"},{"url":"https://git.kernel.org/stable/c/14eb0c9491385d5361a292ea4974aec0e6887299"},{"url":"https://git.kernel.org/stable/c/1b12612c367e4be9b0814c0468e7e687835315b4"},{"url":"https://git.kernel.org/stable/c/231a8a4b76cb1b1827b3b19d7b3603642f5aaaef"},{"url":"https://git.kernel.org/stable/c/f0f1887a9e30712a1df03e152dce6fb91344b1f3"}],"title":"net: qualcomm: rmnet: validate MAP frame length before ingress parsing","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64550","datePublished":"2026-07-27T20:10:39.459Z","dateReserved":"2026-07-19T15:36:31.796Z","dateUpdated":"2026-07-27T20:10:39.459Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-27 21:17:07","lastModifiedDate":"2026-07-27 21:17:07","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64550","Ordinal":"1","Title":"net: qualcomm: rmnet: validate MAP frame length before ingress p","CVE":"CVE-2026-64550","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64550","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qualcomm: rmnet: validate MAP frame length before ingress parsing\n\nWhen ingress deaggregation is disabled, rmnet_map_ingress_handler() passes\nthe skb straight to __rmnet_map_ingress_handler(), skipping the length\nvalidation that rmnet_map_deaggregate() performs on the aggregated path.\nThe parser then dereferences the MAP header and csum header/trailer based on\nthe on-wire pkt_len without checking skb->len, so a short frame is read out\nof bounds:\n\n  BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet\n  Read of size 1 at addr ffff88801118ed00 by task exploit/147\n  Call Trace:\n   ...\n   rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413)\n   __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96)\n   rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129)\n   __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089)\n   netif_receive_skb (net/core/dev.c:6460)\n   tun_get_user (drivers/net/tun.c:1955)\n   tun_chr_write_iter (drivers/net/tun.c:2001)\n   vfs_write (fs/read_write.c:688)\n   ksys_write (fs/read_write.c:740)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   ...\n\nFactor that validation out of rmnet_map_deaggregate() into\nrmnet_map_validate_packet_len() and run it on the no-aggregation path too.\nThe MAP header is bounds-checked first, since this path can receive a frame\nshorter than the header.","Type":"Description","Title":"net: qualcomm: rmnet: validate MAP frame length before ingress p"}]}}}