{"api_version":"1","generated_at":"2026-06-26T20:55:33+00:00","cve":"CVE-2026-53241","urls":{"html":"https://cve.report/CVE-2026-53241","api":"https://cve.report/api/cve/CVE-2026-53241.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53241","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53241"},"summary":{"title":"ALSA: seq: dummy: fix UMP event stack overread","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: dummy: fix UMP event stack overread\n\nThe dummy sequencer port forwards events by copying an incoming\nstruct snd_seq_event into a stack temporary, rewriting source and\ndestination, and dispatching the temporary to subscribers. That legacy\nevent storage is smaller than struct snd_seq_ump_event.\n\nWhen a UMP event reaches the dummy client, the copy leaves the UMP flag\nset but only provides legacy-sized stack storage. The subscriber\ndelivery path then uses snd_seq_event_packet_size() and copies a\nUMP-sized packet from that stack object, reading past the end of the\ntemporary.\n\nUse the existing union __snd_seq_event storage and copy the packet size\nreported for the incoming event before rewriting the common routing\nfields. This preserves the full UMP packet for UMP events while keeping\nlegacy event handling unchanged.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:42","updated_at":"2026-06-25 09:16:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a7ef78a2c536242ccb7a4429da01580b2409bb24","name":"https://git.kernel.org/stable/c/a7ef78a2c536242ccb7a4429da01580b2409bb24","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2b5ff4db5d7aa5b981d966df02e687f79ad7b311","name":"https://git.kernel.org/stable/c/2b5ff4db5d7aa5b981d966df02e687f79ad7b311","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6671a46144f880c5a167930ebb14c12f3d059fe9","name":"https://git.kernel.org/stable/c/6671a46144f880c5a167930ebb14c12f3d059fe9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6676b6063440561db600494049ce7ffb695c8cc4","name":"https://git.kernel.org/stable/c/6676b6063440561db600494049ce7ffb695c8cc4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53241","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53241","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 32cb23a0f911317cdb5030035e49a204aa86fef5 a7ef78a2c536242ccb7a4429da01580b2409bb24 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 32cb23a0f911317cdb5030035e49a204aa86fef5 6671a46144f880c5a167930ebb14c12f3d059fe9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 32cb23a0f911317cdb5030035e49a204aa86fef5 6676b6063440561db600494049ce7ffb695c8cc4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 32cb23a0f911317cdb5030035e49a204aa86fef5 2b5ff4db5d7aa5b981d966df02e687f79ad7b311 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.94 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.36 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.13 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53241","cve":"CVE-2026-53241","epss":"0.001750000","percentile":"0.072040000","score_date":"2026-06-25","updated_at":"2026-06-26 00:06:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/core/seq/seq_dummy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a7ef78a2c536242ccb7a4429da01580b2409bb24","status":"affected","version":"32cb23a0f911317cdb5030035e49a204aa86fef5","versionType":"git"},{"lessThan":"6671a46144f880c5a167930ebb14c12f3d059fe9","status":"affected","version":"32cb23a0f911317cdb5030035e49a204aa86fef5","versionType":"git"},{"lessThan":"6676b6063440561db600494049ce7ffb695c8cc4","status":"affected","version":"32cb23a0f911317cdb5030035e49a204aa86fef5","versionType":"git"},{"lessThan":"2b5ff4db5d7aa5b981d966df02e687f79ad7b311","status":"affected","version":"32cb23a0f911317cdb5030035e49a204aa86fef5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/core/seq/seq_dummy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.94","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.36","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.13","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: dummy: fix UMP event stack overread\n\nThe dummy sequencer port forwards events by copying an incoming\nstruct snd_seq_event into a stack temporary, rewriting source and\ndestination, and dispatching the temporary to subscribers. That legacy\nevent storage is smaller than struct snd_seq_ump_event.\n\nWhen a UMP event reaches the dummy client, the copy leaves the UMP flag\nset but only provides legacy-sized stack storage. The subscriber\ndelivery path then uses snd_seq_event_packet_size() and copies a\nUMP-sized packet from that stack object, reading past the end of the\ntemporary.\n\nUse the existing union __snd_seq_event storage and copy the packet size\nreported for the incoming event before rewriting the common routing\nfields. This preserves the full UMP packet for UMP events while keeping\nlegacy event handling unchanged."}],"providerMetadata":{"dateUpdated":"2026-06-25T08:39:36.482Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a7ef78a2c536242ccb7a4429da01580b2409bb24"},{"url":"https://git.kernel.org/stable/c/6671a46144f880c5a167930ebb14c12f3d059fe9"},{"url":"https://git.kernel.org/stable/c/6676b6063440561db600494049ce7ffb695c8cc4"},{"url":"https://git.kernel.org/stable/c/2b5ff4db5d7aa5b981d966df02e687f79ad7b311"}],"title":"ALSA: seq: dummy: fix UMP event stack overread","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53241","datePublished":"2026-06-25T08:39:36.482Z","dateReserved":"2026-06-09T07:44:35.393Z","dateUpdated":"2026-06-25T08:39:36.482Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:42","lastModifiedDate":"2026-06-25 09:16:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53241","Ordinal":"1","Title":"ALSA: seq: dummy: fix UMP event stack overread","CVE":"CVE-2026-53241","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53241","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: dummy: fix UMP event stack overread\n\nThe dummy sequencer port forwards events by copying an incoming\nstruct snd_seq_event into a stack temporary, rewriting source and\ndestination, and dispatching the temporary to subscribers. That legacy\nevent storage is smaller than struct snd_seq_ump_event.\n\nWhen a UMP event reaches the dummy client, the copy leaves the UMP flag\nset but only provides legacy-sized stack storage. The subscriber\ndelivery path then uses snd_seq_event_packet_size() and copies a\nUMP-sized packet from that stack object, reading past the end of the\ntemporary.\n\nUse the existing union __snd_seq_event storage and copy the packet size\nreported for the incoming event before rewriting the common routing\nfields. This preserves the full UMP packet for UMP events while keeping\nlegacy event handling unchanged.","Type":"Description","Title":"ALSA: seq: dummy: fix UMP event stack overread"}]}}}