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 · fixed in 6.8.0-1041.43~22.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1041.43~22.04.1, 6.8.0-1041.47~22.04.1, 6.8.0-1042.45~22.04.1 +33
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
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux@6.8.0-86.87?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws@6.8.0-1041.43?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure@6.8.0-1041.47?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11@6.11.0-1018.18~24.04.1?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-fde-6.17pkg:deb/ubuntu/linux-azure-fde-6.17@6.17.0-1017.17~24.04.1?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected Linux kernel versions. The patch enforces that vhost_scsi_set_endpoint cannot be called multiple times without a preceding vhost_scsi_clear_endpoint call. Users should ensure their systems are updated with the vendor-provided fixes. Since the main user (QEMU) already prevents this misuse, users relying on QEMU may already be protected, but updating remains recommended.
Description
A vulnerability in the Linux kernel's vhost-scsi subsystem was fixed that addressed multiple bugs triggered by calling vhost_scsi_set_endpoint multiple times without clearing the endpoint. These bugs include a use-after-free condition, a hang caused by reference count underflow when removing target portal groups (tpgs), and a resource leak due to improper target name handling. The vulnerability affects specific Linux kernel versions and requires clearing the endpoint before reconfiguring. A patch is available to prevent these issues.
References
- ubuntu.com/security/CVE-2025-22083 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-22083 (opens in a new tab)
- git.kernel.org/linus/5dd639a1646ef5fe8f4bf270fad47c5c3755b9b6 (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/5dd639a1646ef5fe8f4bf270fad47c5c3755b9b6 (opens in a new tab)
- git.kernel.org/stable/c/63b449f73ab0dcc0ba11ceaa4c5c70bc86ccf03c (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7605-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7606-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7605-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7628-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-5 (opens in a new tab)