{"api_version":"1","generated_at":"2026-09-12T02:59:53+00:00","cve":"CVE-2026-89719","urls":{"html":"https://cve.report/CVE-2026-89719","api":"https://cve.report/api/cve/CVE-2026-89719.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89719","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89719"},"summary":{"title":"zram: fix out-of-bounds access in read_block_state()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: fix out-of-bounds access in read_block_state()\n\nread_block_state() calculates nr_pages before taking dev_lock.  If the\ndevice is reset and reinitialized with a smaller disksize before lock\nacquisition, nr_pages still describes the old table.  The subsequent loop\ncan then call slot_lock() past the end of the newly allocated table.\n\nRead disksize after acquiring dev_lock and checking that the device is\ninitialized.  The read lock then keeps the table and its bound stable for\nthe duration of the scan.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:00","updated_at":"2026-09-11 20:20:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3","name":"https://git.kernel.org/stable/c/5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739d","name":"https://git.kernel.org/stable/c/e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/391f057f44a51cc9418da5cba78b014324174264","name":"https://git.kernel.org/stable/c/391f057f44a51cc9418da5cba78b014324174264","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89719","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89719","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 391f057f44a51cc9418da5cba78b014324174264 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/block/zram/zram_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739d","status":"affected","version":"c0265342bff4fcaa2cdf13f4596244c18d4a7ae5","versionType":"git"},{"lessThan":"5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3","status":"affected","version":"c0265342bff4fcaa2cdf13f4596244c18d4a7ae5","versionType":"git"},{"lessThan":"391f057f44a51cc9418da5cba78b014324174264","status":"affected","version":"c0265342bff4fcaa2cdf13f4596244c18d4a7ae5","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":"4.18"},{"lessThan":"4.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: fix out-of-bounds access in read_block_state()\n\nread_block_state() calculates nr_pages before taking dev_lock.  If the\ndevice is reset and reinitialized with a smaller disksize before lock\nacquisition, nr_pages still describes the old table.  The subsequent loop\ncan then call slot_lock() past the end of the newly allocated table.\n\nRead disksize after acquiring dev_lock and checking that the device is\ninitialized.  The read lock then keeps the table and its bound stable for\nthe duration of the scan."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:32.185Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739d"},{"url":"https://git.kernel.org/stable/c/5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3"},{"url":"https://git.kernel.org/stable/c/391f057f44a51cc9418da5cba78b014324174264"}],"title":"zram: fix out-of-bounds access in read_block_state()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89719","datePublished":"2026-09-11T19:46:32.185Z","dateReserved":"2026-09-11T19:38:34.752Z","dateUpdated":"2026-09-11T19:46:32.185Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:00","lastModifiedDate":"2026-09-11 20:20:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89719","Ordinal":"1","Title":"zram: fix out-of-bounds access in read_block_state()","CVE":"CVE-2026-89719","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89719","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: fix out-of-bounds access in read_block_state()\n\nread_block_state() calculates nr_pages before taking dev_lock.  If the\ndevice is reset and reinitialized with a smaller disksize before lock\nacquisition, nr_pages still describes the old table.  The subsequent loop\ncan then call slot_lock() past the end of the newly allocated table.\n\nRead disksize after acquiring dev_lock and checking that the device is\ninitialized.  The read lock then keeps the table and its bound stable for\nthe duration of the scan.","Type":"Description","Title":"zram: fix out-of-bounds access in read_block_state()"}]}}}