CVE-2026-89606
Last modified
CVE-2026-89606 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ecryptfs: reject too-small tag 70 packets ecryptfs_parse_tag_70_packet() subtracts fixed metadata fields from the parsed packet body size to derive the encrypted filename size. A malformed packet with a body smaller than those fixed fields can underflow that size calculation. Reject tag 70 packets before the subtraction unless the body contains the signature, cipher code, and at least one byte of encrypted filename data.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: ecryptfs: reject too-small tag 70 packets ecryptfs_parse_tag_70_packet() subtracts fixed metadata fields from the parsed packet body size to derive the encrypted filename size. A malformed packet with a body smaller than those fixed fields can underflow that size calculation. Reject tag 70 packets before the subtraction unless the body contains the signature, cipher code, and at least one byte of encrypted filename data.
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < df5f375a6151ef71f636da044bcef90c26697255; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < 5668121974eb7f7aa82793a9d0d13abadb8904dc; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < 2e5afed9503dd1d85004c09503adc2cb584c0188; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < 414a0f04feb06f03523edf7e2a8be1d7f1a9b160; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < 9d88391bbed76eb091cddd50b0af87b1c6f22589; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < b31da1ecf13929a8d7f8d2727843d2fe35396b75; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < d2869768eab5648e6edc05f47e0716e5328e6681; >= 9c79f34f7ee71cd28272332b424ca64b2be006ab, < e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f |
| Linux | Linux | 2.6.29 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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