{"schema":"threatline.record/2","record":{"id":"CVE-2026-98722","aliases":[],"summary":"mtd: block2mtd: Fix divide error when erase_size is zero","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: block2mtd: Fix divide error when erase_size is zero\n\nThe erase size is parsed from the \"block2mtd\" module parameter and can\nbe set to zero. add_device() then evaluates\n\n        if (size % erase_size)\n\nwith a zero divisor, which triggers a divide error:\n\ndivide error: 0000 [#1] PREEMPT SMP PTI\nRIP: 0010:add_device drivers/mtd/devices/block2mtd.c:296 [inline]\nRIP: 0010:block2mtd_setup2+0x592/0xda0 drivers/mtd/devices/block2mtd.c:459\nCall Trace:\nblock2mtd_setup+0x27/0xe0 drivers/mtd/devices/block2mtd.c:476\nparam_attr_store+0x214/0x310 kernel/params.c:589\nmodule_attr_store+0x65/0x90 kernel/params.c:904\nkernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345\n...\n\nReject a zero erase size before performing the modulo operation so the\nexisting \"erasesize must be a divisor of device size\" error path\nreports the invalid argument and frees the device.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98722","source_modified_at":"2026-10-21T12:56:04.591Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"ea6d833a3fddcd1d60414d48f34c7f4fbe88608f","lessThan":"bff83b723e93acc788bd690dc4bc1f6f4356c35b","status":"affected","versionType":"git"},{"version":"ea6d833a3fddcd1d60414d48f34c7f4fbe88608f","lessThan":"826170a49ca1315af6b293a02200585b1e2186d9","status":"affected","versionType":"git"},{"version":"ea6d833a3fddcd1d60414d48f34c7f4fbe88608f","lessThan":"a991c28066e7ba4da7450bb04478849f7ac6a14a","status":"affected","versionType":"git"},{"version":"ea6d833a3fddcd1d60414d48f34c7f4fbe88608f","lessThan":"21d0f05989bf0d5cef57b467a7fa4feefbd7236a","status":"affected","versionType":"git"},{"version":"ea6d833a3fddcd1d60414d48f34c7f4fbe88608f","lessThan":"b5965c4221165045e19736794ca5f48ae3d67142","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98722","source_modified_at":"2026-10-21T12:56:04.591Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.15","status":"affected"},{"version":"0","lessThan":"3.15","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98722","source_modified_at":"2026-10-21T12:56:04.591Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"826170a49ca1315af6b293a02200585b1e2186d9","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98722","source_modified_at":"2026-10-21T12:56:04.591Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"21d0f05989bf0d5cef57b467a7fa4feefbd7236a","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05721,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:46:58.093Z","modified_at":"2026-10-21T12:56:04.591Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98722","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:56:04.591Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98722","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/bff83b723e93acc788bd690dc4bc1f6f4356c35b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/826170a49ca1315af6b293a02200585b1e2186d9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a991c28066e7ba4da7450bb04478849f7ac6a14a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/21d0f05989bf0d5cef57b467a7fa4feefbd7236a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b5965c4221165045e19736794ca5f48ae3d67142"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:56:04.591Z","content_hash":"c4610307be9b87f0839167c31922b52e98d29db79c71cdc5a2c450ceda614497"}}