CVE-2026-68286drop_monitor: perform u64_stats updates under IRQ-disabled section
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: drop_monitor: perform u64_stats updates under IRQ-disabled section In net_dm_packet_trace_kfree_skb_hit() and net_dm_hw_trap_packet_probe(), u64_stats_update_begin() / u64_stats_inc() / u64_stats_update_end() were called after spin_unlock_irqrestore(&...drop_queue.lock, flags), when local IRQs had already been re-enabled. Tracepoint probes can execute in IRQ or softirq context. On 32-bit architectures, u64_stats_update_begin() disables preemption but not interrupts, relying on seqcount writes. If a nested interrupt occurs on the same CPU during the 64-bit stats update, the reentrant seqcount update can corrupt the seqcount state or stats value. Fix this by performing the 64-bit per-CPU stats update before releasing drop_queue.lock via spin_unlock_irqrestore(), ensuring local interrupts remain disabled during the u64_stats update.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 54 days later
· 54 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < dd8472526a04f2185afd792b8041a912a7d75d85
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < 3454c729ee8aa682ec871f1b174b047f731933ae
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < be9b121894d6ad44f0011f79543a2e3245979497
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < 7d857cf5f0120bb0e020fa20b03bd21b9d3e0c04
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < d5e2cd2bc8ae36617346b3a54ee9da61d866bf92
- affected e9feb58020f952f7d9de785ede9a7d54ab1eda5c – < fd098a23bf8fda7eae48db9b06e7c34fc4d228fa
- affected 5.4
- unaffected < 5.4
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/dd8472526a04f2185afd792b8041a912a7d75d85 (opens in a new tab)
- https://git.kernel.org/stable/c/3454c729ee8aa682ec871f1b174b047f731933ae (opens in a new tab)
- https://git.kernel.org/stable/c/be9b121894d6ad44f0011f79543a2e3245979497 (opens in a new tab)
- https://git.kernel.org/stable/c/7d857cf5f0120bb0e020fa20b03bd21b9d3e0c04 (opens in a new tab)
- https://git.kernel.org/stable/c/d5e2cd2bc8ae36617346b3a54ee9da61d866bf92 (opens in a new tab)
- https://git.kernel.org/stable/c/fd098a23bf8fda7eae48db9b06e7c34fc4d228fa (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-55387 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-68286)Record last updated .