CVE-2026-89770

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89770", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.765Z", "datePublished": "2026-09-11T19:47:09.630Z", "dateUpdated": "2026-10-19T08:52:23.735Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:52:23.735Z"}, "descriptions": [{"lang": "en", "value": "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 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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/iomap/bio.c"], "versions": [{"version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78", "lessThan": "65651f1001aa3638909bc58c7b2b46160692757b", "status": "affected", "versionType": "git"}, {"version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78", "lessThan": "8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/iomap/bio.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b"}, {"url": "https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"}], "title": "iomap: don't free integrity payload that doesn't exist", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/iomap/bio.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "65651f1001aa3638909bc58c7b2b46160692757b", "status": "affected", "version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78", "versionType": "git"}, {"lessThan": "8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d", "status": "affected", "version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/iomap/bio.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 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."}], "id": "CVE-2026-89770", "lastModified": "2026-10-19T09:18:20.290", "metrics": {}, "published": "2026-09-11T20:20:08.353", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: NULL pointer dereference in iomap component", "id": "2532471", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532471"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the `iomap` component of the Linux kernel. This vulnerability occurs when Protection Information (PI) verification is disabled on a block device, causing `fs_bio_integrity_alloc` to not allocate a bio integrity payload. Subsequently, the `iomap_bio_read_folio_range_sync` function attempts to free this non-existent payload, leading to a NULL pointer dereference. This could potentially result in a system crash or denial of service."], "name": "CVE-2026-89770", "public_date": "2026-09-11T19:47:09Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89770\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89770\nhttps://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b\nhttps://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0b10a370529cbd7b918c1eef43d409e43d9e0b78,65651f1001aa3638909bc58c7b2b46160692757b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0b10a370529cbd7b918c1eef43d409e43d9e0b78,8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T10:30:13.417286+00:00", "updated": "2026-09-15T19:30:12.126455+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}