UnratedFix available
s390/dasd: Fix potential NULL pointer dereference
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Fix potential NULL pointer dereference dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD. The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL. Fix this by using the logical OR operator.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.265, 5.15.216, 6.1.183, 6.12.103, 6.18.44, 6.6.151, 7.1.8
- CVEs
- CVE-2026-80679
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 19:44 UTC · Revision 1
Source evidence
s390/dasd: Fix potential NULL pointer dereference
core-osv · Original sourcePublished 28 Aug 2026, 06:52 UTC
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Fix potential NULL pointer dereference dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD. The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL. Fix this by using the logical OR operator.
osv:CVE-2026-80679
Kernel
Fixed versions: 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, 6.18.44, 7.1.8
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-80679",
"method": "structured",
"payload": {
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"title": "s390/dasd: Fix potential NULL pointer dereference",
"summary": "In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Fix potential NULL pointer dereference dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD. The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL. Fix this by using the logical OR operator.",
"evidence": "osv:CVE-2026-80679",
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"modified": "2026-10-28T02:30:38.740286038Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caae",
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"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80679.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-80679",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80679.json"
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},
"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 506309,
"published_at": "2026-08-28T06:52:47.682+00:00"
}