{"api_version":"1","generated_at":"2026-08-22T21:52:59+00:00","cve":"CVE-2026-74712","urls":{"html":"https://cve.report/CVE-2026-74712","api":"https://cve.report/api/cve/CVE-2026-74712.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74712","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74712"},"summary":{"title":"vdpa/mlx5: Fix buffer length in create_direct_keys()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_core]\nRead of size 272 at addr 0000000176795020 by task qemu-system-s39/82764\n[...]\n[<000011388ab3a7a0>] cmd_exec+0x550/0xca0 [mlx5_core]\n[<000011388ab3b61c>] mlx5_cmd_exec_cb+0x25c/0x4f0 [mlx5_core]\n[<000011388b21e82e>] mlx5_vdpa_exec_async_cmds+0x22e/0x5e0 [mlx5_vdpa]\n[<000011388b21fd44>] create_direct_keys+0x954/0xef0 [mlx5_vdpa]\n[...]\nThe buggy address is located 4128 bytes inside of\nallocated 4384-byte region [0000000176794000, 0000000176795120)\n\nSo in essence we read 16 bytes beyond 4384-byte allocation.\ncreate_direct_keys calculates the pointer and length for in and out\nbuffers.\nThe size calculation for in includes the entire structure\nsize (out + in + mtt[]) but the pointer passed to cmd_exec points only\nto the 'in' field, skipping the 'out' field.\n\nThis causes mlx5_copy_to_msg() to read beyond the allocated buffer\nby sizeof(out) bytes when copying command data.\n\nProperly calculate the input size to match the pointer and allocation size.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:45","updated_at":"2026-08-22 16:16:45"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6c8a9f7bc00301e533a5366384f3070a8e7f8430","name":"https://git.kernel.org/stable/c/6c8a9f7bc00301e533a5366384f3070a8e7f8430","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ec3bb289cf19d526224117d5d450a5fd9cbd5ab2","name":"https://git.kernel.org/stable/c/ec3bb289cf19d526224117d5d450a5fd9cbd5ab2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/727e1f569855df83579edbd73dcb4a0723543a12","name":"https://git.kernel.org/stable/c/727e1f569855df83579edbd73dcb4a0723543a12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cde8931a25392670dd59a0acfcab87a830ab66c5","name":"https://git.kernel.org/stable/c/cde8931a25392670dd59a0acfcab87a830ab66c5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74712","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74712","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0071b138d44af4296bf871e6624369ce697b4b15 ec3bb289cf19d526224117d5d450a5fd9cbd5ab2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0071b138d44af4296bf871e6624369ce697b4b15 cde8931a25392670dd59a0acfcab87a830ab66c5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0071b138d44af4296bf871e6624369ce697b4b15 6c8a9f7bc00301e533a5366384f3070a8e7f8430 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0071b138d44af4296bf871e6624369ce697b4b15 727e1f569855df83579edbd73dcb4a0723543a12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * 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/vdpa/mlx5/core/mr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ec3bb289cf19d526224117d5d450a5fd9cbd5ab2","status":"affected","version":"0071b138d44af4296bf871e6624369ce697b4b15","versionType":"git"},{"lessThan":"cde8931a25392670dd59a0acfcab87a830ab66c5","status":"affected","version":"0071b138d44af4296bf871e6624369ce697b4b15","versionType":"git"},{"lessThan":"6c8a9f7bc00301e533a5366384f3070a8e7f8430","status":"affected","version":"0071b138d44af4296bf871e6624369ce697b4b15","versionType":"git"},{"lessThan":"727e1f569855df83579edbd73dcb4a0723543a12","status":"affected","version":"0071b138d44af4296bf871e6624369ce697b4b15","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/vdpa/mlx5/core/mr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_core]\nRead of size 272 at addr 0000000176795020 by task qemu-system-s39/82764\n[...]\n[<000011388ab3a7a0>] cmd_exec+0x550/0xca0 [mlx5_core]\n[<000011388ab3b61c>] mlx5_cmd_exec_cb+0x25c/0x4f0 [mlx5_core]\n[<000011388b21e82e>] mlx5_vdpa_exec_async_cmds+0x22e/0x5e0 [mlx5_vdpa]\n[<000011388b21fd44>] create_direct_keys+0x954/0xef0 [mlx5_vdpa]\n[...]\nThe buggy address is located 4128 bytes inside of\nallocated 4384-byte region [0000000176794000, 0000000176795120)\n\nSo in essence we read 16 bytes beyond 4384-byte allocation.\ncreate_direct_keys calculates the pointer and length for in and out\nbuffers.\nThe size calculation for in includes the entire structure\nsize (out + in + mtt[]) but the pointer passed to cmd_exec points only\nto the 'in' field, skipping the 'out' field.\n\nThis causes mlx5_copy_to_msg() to read beyond the allocated buffer\nby sizeof(out) bytes when copying command data.\n\nProperly calculate the input size to match the pointer and allocation size."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:33:08.392Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ec3bb289cf19d526224117d5d450a5fd9cbd5ab2"},{"url":"https://git.kernel.org/stable/c/cde8931a25392670dd59a0acfcab87a830ab66c5"},{"url":"https://git.kernel.org/stable/c/6c8a9f7bc00301e533a5366384f3070a8e7f8430"},{"url":"https://git.kernel.org/stable/c/727e1f569855df83579edbd73dcb4a0723543a12"}],"title":"vdpa/mlx5: Fix buffer length in create_direct_keys()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74712","datePublished":"2026-08-22T15:33:08.392Z","dateReserved":"2026-08-15T05:44:03.928Z","dateUpdated":"2026-08-22T15:33:08.392Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:45","lastModifiedDate":"2026-08-22 16:16:45","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74712","Ordinal":"1","Title":"vdpa/mlx5: Fix buffer length in create_direct_keys()","CVE":"CVE-2026-74712","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74712","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_core]\nRead of size 272 at addr 0000000176795020 by task qemu-system-s39/82764\n[...]\n[<000011388ab3a7a0>] cmd_exec+0x550/0xca0 [mlx5_core]\n[<000011388ab3b61c>] mlx5_cmd_exec_cb+0x25c/0x4f0 [mlx5_core]\n[<000011388b21e82e>] mlx5_vdpa_exec_async_cmds+0x22e/0x5e0 [mlx5_vdpa]\n[<000011388b21fd44>] create_direct_keys+0x954/0xef0 [mlx5_vdpa]\n[...]\nThe buggy address is located 4128 bytes inside of\nallocated 4384-byte region [0000000176794000, 0000000176795120)\n\nSo in essence we read 16 bytes beyond 4384-byte allocation.\ncreate_direct_keys calculates the pointer and length for in and out\nbuffers.\nThe size calculation for in includes the entire structure\nsize (out + in + mtt[]) but the pointer passed to cmd_exec points only\nto the 'in' field, skipping the 'out' field.\n\nThis causes mlx5_copy_to_msg() to read beyond the allocated buffer\nby sizeof(out) bytes when copying command data.\n\nProperly calculate the input size to match the pointer and allocation size.","Type":"Description","Title":"vdpa/mlx5: Fix buffer length in create_direct_keys()"}]}}}