{"api_version":"1","generated_at":"2026-06-03T06:13:13+00:00","cve":"CVE-2026-45962","urls":{"html":"https://cve.report/CVE-2026-45962","api":"https://cve.report/api/cve/CVE-2026-45962.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45962","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45962"},"summary":{"title":"ublk: Validate SQE128 flag before accessing the cmd","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: Validate SQE128 flag before accessing the cmd\n\nublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before\nIO_URING_F_SQE128 flag check. This could cause out of boundary memory\naccess.\n\nMove the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return\n-EINVAL immediately if the flag is not set.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:12","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec","name":"https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8","name":"https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a","name":"https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67","name":"https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684","name":"https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb","name":"https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45962","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45962","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 4b4dff498f46e9802f71bc84258bf73065f51c6a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 31cac6acf77ece488f29fb8f79589d9298e969c8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 dbe8e81a2ec608f87f79a34f6444cd62f6a243bb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 f75a5555e0049e7857eae25b60aee98b80e287ec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 17d33ba7291100008360b5a354962db37ad80684 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 71f28f3136aff5890cd56de78abc673f8393cad9 da7e4b75e50c087d2031a92f6646eb90f7045a67 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.14 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.4 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"45962","cve":"CVE-2026-45962","epss":"0.000240000","percentile":"0.073320000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/block/ublk_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4b4dff498f46e9802f71bc84258bf73065f51c6a","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"},{"lessThan":"31cac6acf77ece488f29fb8f79589d9298e969c8","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"},{"lessThan":"dbe8e81a2ec608f87f79a34f6444cd62f6a243bb","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"},{"lessThan":"f75a5555e0049e7857eae25b60aee98b80e287ec","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"},{"lessThan":"17d33ba7291100008360b5a354962db37ad80684","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"},{"lessThan":"da7e4b75e50c087d2031a92f6646eb90f7045a67","status":"affected","version":"71f28f3136aff5890cd56de78abc673f8393cad9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/block/ublk_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: Validate SQE128 flag before accessing the cmd\n\nublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before\nIO_URING_F_SQE128 flag check. This could cause out of boundary memory\naccess.\n\nMove the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return\n-EINVAL immediately if the flag is not set."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:18:19.070Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a"},{"url":"https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8"},{"url":"https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb"},{"url":"https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec"},{"url":"https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684"},{"url":"https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67"}],"title":"ublk: Validate SQE128 flag before accessing the cmd","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45962","datePublished":"2026-05-27T12:18:19.070Z","dateReserved":"2026-05-13T15:03:33.089Z","dateUpdated":"2026-05-27T12:18:19.070Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:12","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45962","Ordinal":"1","Title":"ublk: Validate SQE128 flag before accessing the cmd","CVE":"CVE-2026-45962","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45962","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: Validate SQE128 flag before accessing the cmd\n\nublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before\nIO_URING_F_SQE128 flag check. This could cause out of boundary memory\naccess.\n\nMove the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return\n-EINVAL immediately if the flag is not set.","Type":"Description","Title":"ublk: Validate SQE128 flag before accessing the cmd"}]}}}