CVE-2026-89636Critical· 9.8▾ MidnightIn 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 struct…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 7.1
none → high
— → 9.8
none → critical
9.8 → 7.1
critical → high
7.1 → 9.8
high → critical
9.8 → 7
critical → high
0.2% → 0.7%
7 → 9.8
high → critical
Last analysed / modified upstream
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.
Linux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < 14f60e959b5ac813715ff72e127beb3584ddabf6Linux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < 3ff9462bb7a06d8d32a1dc02d39580b078ec9e55Linux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < 7507bd1885643d0461a6017767492450af1ce2a3Linux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < 9ab46a13798a61d9d020b01d4e57efdabe6624faLinux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < 5baab40404a9393bcc0b7b8f1950bf2c307e0984Linux >= 54be1f6c1c37498bba557049df646cc239fa37e3 < b1b741cf8e7ce1b91d937e23decd3d3358748700Linux 5.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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