{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80679", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.783Z", "datePublished": "2026-08-28T06:52:47.682Z", "dateUpdated": "2026-08-28T06:52:47.682Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-28T06:52:47.682Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Fix potential NULL pointer dereference\n\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\n\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\n\nFix this by using the logical OR 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/s390/block/dasd_ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "dbf2ae34d2f1390a9fc1abf3dce7f809e022caae", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "3000367a512b1283ca52230bf21f8c91dfbec45b", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "e156c70c505c6c9adce3b7be5a82025f00544709", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "3453a993a3f14c1684560ecf26585046976f6ac6", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "86cdfd061509bcde84f3145f7221ba64e3e53b1f", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "96b8e09b09539f252a5eeea6baebd93c2e3779bd", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}, {"lessThan": "9973026f572db6b67570cadc30942f3014e41079", "status": "affected", "version": "91dc4a197569230683ca8bad551e655a4bf14c30", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/s390/block/dasd_ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\ns390/dasd: Fix potential NULL pointer dereference\n\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\n\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\n\nFix this by using the logical OR operator."}], "id": "CVE-2026-80679", "lastModified": "2026-08-28T08:16:53.227", "metrics": {}, "published": "2026-08-28T08:16:53.227", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3000367a512b1283ca52230bf21f8c91dfbec45b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3453a993a3f14c1684560ecf26585046976f6ac6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/86cdfd061509bcde84f3145f7221ba64e3e53b1f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/96b8e09b09539f252a5eeea6baebd93c2e3779bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9973026f572db6b67570cadc30942f3014e41079"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e156c70c505c6c9adce3b7be5a82025f00544709"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: s390/dasd: Fix potential NULL pointer dereference", "id": "2525428", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525428"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/dasd: Fix potential NULL pointer dereference\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\nFix this by using the logical OR operator.", "A flaw was found in the Linux kernel. Specifically, within the s390/dasd component, the `dasd_release_space()` function incorrectly checks a function pointer by using a logical AND operator instead of a logical OR operator. This error can lead to a NULL pointer dereference, which may cause a system crash and result in a denial of service."], "name": "CVE-2026-80679", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80679\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80679\nhttps://lore.kernel.org/linux-cve-announce/2026082801-CVE-2026-80679-b60a@gregkh/T"], "threat_severity": "Low"}