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Vendor Workaround
To mitigate this issue, avoid enabling filename remapping with the `m/-map-file` option for the `in.tftpd` service unless strictly necessary. If filename remapping is required, ensure that any inverse (`~`) and abort (`a`) rules in the remap file do not include a non-empty custom error message. Changes to the `in.tftpd` configuration may require restarting the service to take effect.
Tracking
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Tue, 15 Sep 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service. | |
| Title | Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird |
|
| Weaknesses | CWE-125 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-15T19:43:52.914Z
Reserved: 2026-09-03T14:57:22.051Z
Link: CVE-2026-85234
No data.
Status : Received
Published: 2026-09-15T18:19:34.927
Modified: 2026-09-15T18:19:34.927
Link: CVE-2026-85234
No data.
OpenCVE Enrichment
No data.
