{"api_version":"1","generated_at":"2026-05-29T20:09:09+00:00","cve":"CVE-2026-46089","urls":{"html":"https://cve.report/CVE-2026-46089","api":"https://cve.report/api/cve/CVE-2026-46089.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46089","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46089"},"summary":{"title":"zram: do not forget to endio for partial discard requests","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: do not forget to endio for partial discard requests\n\nAs reported by Qu Wenruo and Avinesh Kumar, the following\n\n getconf PAGESIZE\n 65536\n blkdiscard -p 4k /dev/zram0\n\ntakes literally forever to complete.  zram doesn't support partial\ndiscards and just returns immediately w/o doing any discard work in such\ncases.  The problem is that we forget to endio on our way out, so\nblkdiscard sleeps forever in submit_bio_wait().  Fix this by jumping to\nend_bio label, which does bio_endio().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:30","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194","name":"https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85","name":"https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5df","name":"https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003","name":"https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975","name":"https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46089","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46089","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0120dd6e4e202e19a0e011e486fb2da40a5ea279 2d1f18efccdb8b29552399d024c36b705447e975 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0120dd6e4e202e19a0e011e486fb2da40a5ea279 35d3300f6357cfaa72db2721dc2b345b19bac5df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0120dd6e4e202e19a0e011e486fb2da40a5ea279 a02363f71a79b755daa78a70d6b217f9c13c8c85 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0120dd6e4e202e19a0e011e486fb2da40a5ea279 68ce397e8236088fc53b9532d383a722288c8194 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0120dd6e4e202e19a0e011e486fb2da40a5ea279 e3668b371329ea036ff022ce8ecc82f8befcf003 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46089","cve":"CVE-2026-46089","epss":"0.000180000","percentile":"0.051520000","score_date":"2026-05-28","updated_at":"2026-05-29 00:13:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/block/zram/zram_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2d1f18efccdb8b29552399d024c36b705447e975","status":"affected","version":"0120dd6e4e202e19a0e011e486fb2da40a5ea279","versionType":"git"},{"lessThan":"35d3300f6357cfaa72db2721dc2b345b19bac5df","status":"affected","version":"0120dd6e4e202e19a0e011e486fb2da40a5ea279","versionType":"git"},{"lessThan":"a02363f71a79b755daa78a70d6b217f9c13c8c85","status":"affected","version":"0120dd6e4e202e19a0e011e486fb2da40a5ea279","versionType":"git"},{"lessThan":"68ce397e8236088fc53b9532d383a722288c8194","status":"affected","version":"0120dd6e4e202e19a0e011e486fb2da40a5ea279","versionType":"git"},{"lessThan":"e3668b371329ea036ff022ce8ecc82f8befcf003","status":"affected","version":"0120dd6e4e202e19a0e011e486fb2da40a5ea279","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/block/zram/zram_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"6.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: do not forget to endio for partial discard requests\n\nAs reported by Qu Wenruo and Avinesh Kumar, the following\n\n getconf PAGESIZE\n 65536\n blkdiscard -p 4k /dev/zram0\n\ntakes literally forever to complete.  zram doesn't support partial\ndiscards and just returns immediately w/o doing any discard work in such\ncases.  The problem is that we forget to endio on our way out, so\nblkdiscard sleeps forever in submit_bio_wait().  Fix this by jumping to\nend_bio label, which does bio_endio()."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:58:32.606Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975"},{"url":"https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5df"},{"url":"https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85"},{"url":"https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194"},{"url":"https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003"}],"title":"zram: do not forget to endio for partial discard requests","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46089","datePublished":"2026-05-27T12:58:32.606Z","dateReserved":"2026-05-13T15:03:33.096Z","dateUpdated":"2026-05-27T12:58:32.606Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:30","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46089","Ordinal":"1","Title":"zram: do not forget to endio for partial discard requests","CVE":"CVE-2026-46089","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46089","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: do not forget to endio for partial discard requests\n\nAs reported by Qu Wenruo and Avinesh Kumar, the following\n\n getconf PAGESIZE\n 65536\n blkdiscard -p 4k /dev/zram0\n\ntakes literally forever to complete.  zram doesn't support partial\ndiscards and just returns immediately w/o doing any discard work in such\ncases.  The problem is that we forget to endio on our way out, so\nblkdiscard sleeps forever in submit_bio_wait().  Fix this by jumping to\nend_bio label, which does bio_endio().","Type":"Description","Title":"zram: do not forget to endio for partial discard requests"}]}}}