SB20260824203 - Operation on Resource in Wrong Phase of Lifetime in Linux kernel core
Published: August 24, 2026
Security Bulletin ID
SB20260824203
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) Operation on Resource in Wrong Phase of Lifetime (CVE-ID: CVE-2026-74627)
CWE-ID: CWE-666 - Operation on Resource in Wrong Phase of Lifetime
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state management in zerocopy_fill_skb_from_devmem() when processing user-supplied devmem-backed zerocopy data into an skb. A local user can trigger mixing of net_iov and page-backed fragments to cause a denial of service.
Remediation
Install update from vendor's website.