net: page_pool: fix use-after-free in page_pool_recycle_ring_bulk()
CVSS score
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EPSS probability
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Risk score
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Published
12 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%63
Short explanation
A use-after-free vulnerability has been identified in the Linux kernel within page_pool_recycle_ring_bulk() under the net: page_pool subsystem. When CONFIG_PAGE_POOL_STATS=y is enabled, the recycle statistics update occurs after dropping the producer lock.
This vulnerability threatens Linux kernel stability and security because it can lead to memory management errors and use-after-free conditions during pool destruction.
What should be done?
- Follow vendor advisories
- Apply available updates
Chain of evidence and sources
CONFIG_PAGE_POOL_STATS=y etkinken page_pool_recycle_ring_bulk() istatistik güncellemelerini üretici kilidini bıraktıktan sonra yapar.
page_pool_release(), recycle_stat_add() çalışmadan önce havuzu serbest bırakabilir.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: net: page_pool: fix use-after-free in page_pool_recycle_ring_bulk() With CONFIG_PAGE_POOL_STATS=y, page_pool_recycle_ring_bulk() updates the recycle stats after dropping the producer lock. If it just recycled the last inflight netmems of a pool being destroyed, page_pool_release() can pass its producer-lock barrier and free the pool before recycle_stat_add() runs. Commit fcc680a647ba7 ("page_pool: allow mixing PPs within one bulk") moved this stat update after the unlock. Commit 271683bb2cf32 ("page_pool: Fix use-after-free in page_pool_recycle_in_ring") later added the barrier, but only fixed page_pool_recycle_in_ring(). Move the update back under the lock.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
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SCORING: CVSS from Multiple Sources
CVSS Scores
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| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
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Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98804 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98804 weaknesses.
Official Sources and Advisories
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