CVE-2026-89636
smb: client: clear ce->tgthint in free_tgts()
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: smb: client: clear ce->tgthint in free_tgts() When free_tgts() frees all structures in ce->tlist, ce->tgthint is left pointing to one of the freed cache_dfs_tgt structures. If ce->tgthint is not reset before it is used later, it results in a use-after-free. Set ce->tgthint to NULL in free_tgts() after the elements are freed to reflect that no elements remain.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new critical vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
54be1f6c1c37498bba557049df646cc239fa37e3 < 14f60e959b5ac813715ff72e127beb3584ddabf6 54be1f6c1c37498bba557049df646cc239fa37e3 < 3ff9462bb7a06d8d32a1dc02d39580b078ec9e55 54be1f6c1c37498bba557049df646cc239fa37e3 < 7507bd1885643d0461a6017767492450af1ce2a3 54be1f6c1c37498bba557049df646cc239fa37e3 < 9ab46a13798a61d9d020b01d4e57efdabe6624fa 54be1f6c1c37498bba557049df646cc239fa37e3 < 5baab40404a9393bcc0b7b8f1950bf2c307e0984 54be1f6c1c37498bba557049df646cc239fa37e3 < b1b741cf8e7ce1b91d937e23decd3d3358748700
Linux / Linux
5.0
References
git.kernel.org: https://git.kernel.org/stable/c/14f60e959b5ac813715ff72e127beb3584ddabf6 git.kernel.org: https://git.kernel.org/stable/c/3ff9462bb7a06d8d32a1dc02d39580b078ec9e55 git.kernel.org: https://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3 git.kernel.org: https://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa git.kernel.org: https://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984 git.kernel.org: https://git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700