CVE-2026-89606 | BDVDB-2026-372039 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/df5f375a6151ef71f636da044bcef90c26697255
- https://git.kernel.org/stable/c/5668121974eb7f7aa82793a9d0d13abadb8904dc
- https://git.kernel.org/stable/c/2e5afed9503dd1d85004c09503adc2cb584c0188
- https://git.kernel.org/stable/c/414a0f04feb06f03523edf7e2a8be1d7f1a9b160
- https://git.kernel.org/stable/c/9d88391bbed76eb091cddd50b0af87b1c6f22589
- https://git.kernel.org/stable/c/b31da1ecf13929a8d7f8d2727843d2fe35396b75
- https://git.kernel.org/stable/c/d2869768eab5648e6edc05f47e0716e5328e6681
- https://git.kernel.org/stable/c/e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.