{"id":"CVE-2026-89770","title":"iomap: don't free integrity payload that doesn't exist","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\niomap: don't free integrity payload that doesn't exist\n\nfs_bio_integrity_alloc might not allocate a bio integrity payload if PI\nverification is disabled on the block de…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 65651f1001aa3638909bc58c7b2b46160692757b","Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d","Linux 7.1"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:52:23.735Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89770","references":[{"url":"https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b"},{"url":"https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89770.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89770"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532471"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89770"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89770"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89770.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00198,"epssPercentile":0.09442,"ingestedAt":"2026-09-14T11:11:19.884Z","slug":"CVE-2026-89770","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\niomap: don't free integrity payload that doesn't exist\n\nfs_bio_integrity_alloc might not allocate a bio integrity payload if PI\nverification is disabled on the block device.  Check for that case before\ncalling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to\navoid a NULL pointer dereferences.\n\nMake the branch cover the PI verification as well - while\nfs_bio_integrity_verify works without an integrity payload, it requires\none to actually do useful work.\n\n## Affected\n\n- `Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 65651f1001aa3638909bc58c7b2b46160692757b`\n- `Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d`\n- `Linux 7.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89770.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":203860,"id":"CVE-2026-89770","ts":1789490210242,"field":"cvss","old":null,"new":"5.5"},{"seq":203859,"id":"CVE-2026-89770","ts":1789490210242,"field":"severity","old":"none","new":"medium"},{"seq":147129,"id":"CVE-2026-89770","ts":1789270195676,"field":"cvss","old":null,"new":"4.7"},{"seq":147128,"id":"CVE-2026-89770","ts":1789270195676,"field":"severity","old":"none","new":"medium"},{"seq":108888,"id":"CVE-2026-89770","ts":1789183729415,"field":"cvss","old":null,"new":"4.7"},{"seq":108887,"id":"CVE-2026-89770","ts":1789183729415,"field":"severity","old":"none","new":"medium"}]}