CVE-2026-99048
UnknownSummary
In the Linux kernel's gve driver, disabling XSK pools called the unlocked versions of napi_disable and napi_enable even though the netdev lock was already held before ndo_bpf. This caused a deadlock because the thread tried to re-acquire a lock it already held. The fix switches the NAPI calls to the locked versions.
Risk Assessment
The deadlock during XSK pool disabling can hang a kernel thread and stall network handling on GVE devices. The issue was found in production.
Recommendation
Update the Linux kernel to a version with the fix using the locked napi_disable/napi_enable versions in gve. Prioritize production systems using GVE with XSK.
Other vulnerabilities in Linux kernel
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- CVE-2026-58828High
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- CVE-2026-99242Unknown
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- CVE-2026-99241Unknown
In the Linux kernel, a missing lock in ntfs_filemap_page_mkwrite() was fixed; it called iomap_page_mkwrite() without holding mapping->invalidate_lock. A concurrent truncate or fallocate could be invalidating pagecache and rewriting the runlist while the write fault mapped blocks and dirtied the folio.
- CVE-2026-99240Unknown
In the Linux kernel, the DAMON subsystem (mm/damon/core) has a division-by-zero bug when a DAMOS quota goal has a target_value of zero. The fix moves handling of this corner case to the core layer by adding validation in damos_commit_quota_goal(), which now returns an error for zero target values.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: gve: fix napi_disable deadlock when attempting to disable XSK pools When disabling XSK pools, GVE calls the unlocked versions of napi_disable and napi_enable. However, the netdev lock has already been acquired before ndo_bpf is called because GVE supports queue management ops. Calling the unlocked versions of napi_disable/enable results in a deadlock when attempting to disable XSK pools, as the thread attempts to re-acquire a lock it already holds. Update the NAPI calls to use the locked versions. This issue was found in production.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS