CVE-2025-22083: Linux kernel · vhost-scsi: Fix handling of multiple calls to vhost_scsi_set_endpoint
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 10 Nov 2026, 13:47 UTC
Thin evidence
One scorer or none| CNA (Linux) | CVSS 3.1 | 7.8 |
|---|
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
AI-suggested
A fix is available that prevents multiple calls to vhost_scsi_set_endpoint without a preceding vhost_scsi_clear_endpoint. Users must ensure that any changes to target portal group configurations or target names are preceded by clearing the endpoint. The major user QEMU already implements checks to avoid this issue. Applying the vendor's patch or updating to a fixed Linux kernel version is recommended to remediate these vulnerabilities.
Description
CVE-2025-22083 addresses multiple bugs in the Linux kernel's vhost-scsi component related to repeated calls to vhost_scsi_set_endpoint without clearing the endpoint first. These bugs include a use-after-free condition, a hang caused by reference count underflow when removing target portal groups (tpgs), and a memory leak due to improper handling of target names and tpg mappings. The vulnerability arises because multiple calls to set endpoints were not properly supported, leading to resource mismanagement and potential denial of service or data corruption. The patch prevents multiple calls to vhost_scsi_set_endpoint without an intervening clear operation, requiring users to clear the endpoint before reconfiguration.
References
- git.kernel.org/stable/c/451c72f5e7cf5d339a6410a635cee0825687c3dc (opens in a new tab)
- git.kernel.org/stable/c/2b34bdc42df047794542f3e220fe989124e4499a (opens in a new tab)
- git.kernel.org/stable/c/3a19eb3d9818e28f14c818a18dc913344a52ca92 (opens in a new tab)
- git.kernel.org/stable/c/3fd054baf382a426bbf5135ede0fc5673db74d3e (opens in a new tab)
- git.kernel.org/stable/c/63b449f73ab0dcc0ba11ceaa4c5c70bc86ccf03c (opens in a new tab)
- git.kernel.org/stable/c/5dd639a1646ef5fe8f4bf270fad47c5c3755b9b6 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)