CVE-2026-98871
UnknownSummary
In the Linux kernel, the crypto ccp driver called rmp_mark_pages_firmware() with locked=false while the parent function already held sev_cmd_mutex. On an RMPUPDATE failure, the cleanup path could deadlock in sev_do_cmd. The fix passes locked=true.
Risk Assessment
Possible kernel deadlock during SEV initialization on failure, leading to system hang. Affects systems using AMD SEV.
Recommendation
Update the Linux kernel to a patched version. Monitor AMD SEV systems for hangs during initialization.
Other vulnerabilities in Linux kernel
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- CVE-2026-58847Unknown
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- CVE-2026-58828High
In multiple functions of base.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed.
- CVE-2026-58827High
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- CVE-2026-58826High
In ksys_unshare of fork.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed.
- CVE-2026-58825High
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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: crypto: ccp - Fix possible deadlock in SEV init failure path __sev_platform_init_handle_init_ex_path() calls rmp_mark_pages_firmware() with locked=false while the parent function of init_ex_path already acquired the sev_cmd_mutex. In the case of an RMPUPDATE failure for any page after the first, the cleanup path would invoke reclaim pages which would result in a deadlock in sev_do_cmd. Pass locked=true to honor the lock status of the parent function.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS