Shim/dp.c library: null-pointer dereference in is_removable_media_path() when devicepathtostr() returns null
Summary
| CVE | CVE-2026-19411 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-10 21:17:23 UTC |
| Updated | 2026-08-11 09:17:13 UTC |
| Description | A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader. |
Risk And Classification
Primary CVSS: v3.1 3.9 LOW from [email protected]
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L
Problem Types: CWE-476 | CWE-476 NULL Pointer Dereference
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 3.9 | LOW | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L |
| 3.1 | CNA | CVSS | 3.9 | LOW | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
HighPrivileges Required
HighUser Interaction
NoneScope
ChangedConfidentiality
NoneIntegrity
LowAvailability
LowCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/security/cve/CVE-2026-19411 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-10T09:17:18.382Z | Reported to Red Hat. |
| CNA | 2026-08-10T09:00:00.000Z | Made public. |
Workarounds
CNA: The code could be modified to include NULL pointer checkers in the code. Before DevicePathToStr : "if (li == NULL || li->FilePath == NULL) return 0;" After DevicePathToStr : "if (bootpath == NULL) return 0;" At error: "if (bootpath != NULL)"
There are currently no legacy QID mappings associated with this CVE.