Critical severity9.8NVD Advisory· Published Sep 11, 2026· Updated Oct 19, 2026
CVE-2026-89636
CVE-2026-89636
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- osv-coords2 versions
>= 5.0.0, < 6.1.188+ 1 more
- (no CPE)range: >= 5.0.0, < 6.1.188
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/14f60e959b5ac813715ff72e127beb3584ddabf6nvd
- git.kernel.org/stable/c/3ff9462bb7a06d8d32a1dc02d39580b078ec9e55nvd
- git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984nvd
- git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3nvd
- git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fanvd
- git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700nvd
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