SB20260529106 - Double free in Linux kernel hw vmw_pvrdma driver
Published: May 29, 2026
Security Bulletin ID
SB20260529106
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double free (CVE-ID: CVE-2026-46189)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free in pvrdma_alloc_ucontext() error path when handling ucontext allocation failures. A local user can trigger the error path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59
- https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0
- https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead
- https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf
- https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0