Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-93219— clocksource/drivers/timer-sun4i: Advertise a real minimum delta

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： clocksource/drivers/timer-sun4i：正确声明最小时间间隔（delta） sun4i_clkevt_next_event() 通过向硬件间隔寄存器写入 的值，来补偿定时器停止/启动过程中的同步延迟。当前，时钟事件设备将 声明为 ，因此时钟事件核心允许以 的参数的调用 。 这会导致编程出一个零滴答（zero-tick）间隔。在启用单次模式（oneshot）、高分辨率模式（highres）或无滴答模式（nohz）的定时器操作下，这可能导致下一个事件停滞

AI Predicted 5.3 Difficulty: Theoretical EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1562.008

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 12e1480bcb4920c1b02b3793cb48756497919a60< 0cc4b14d7401d50e53a01f1554147ee075ee6943 affected
12e1480bcb4920c1b02b3793cb48756497919a60< 53a3bc024b8e5d284468cce84957cded5f859f98 affected
12e1480bcb4920c1b02b3793cb48756497919a60< 753a220084dfc4d737f2ab9eaddc9a01a397edd7 affected
12e1480bcb4920c1b02b3793cb48756497919a60< ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44 affected
12e1480bcb4920c1b02b3793cb48756497919a60< 151eb52f8712017c8f7b00bb2305e8916cb9e3dc affected
12e1480bcb4920c1b02b3793cb48756497919a60< bf38be01d43c4e4ca903aff7236d8486a950a252 affected
12e1480bcb4920c1b02b3793cb48756497919a60< f0efafcdf6eec1f3361bfd8c811420198f55c8bb affected
12e1480bcb4920c1b02b3793cb48756497919a60< d21808328225ab8cee46885bf9a0dffcefbe630e affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-93219

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
clocksource/drivers/timer-sun4i: Advertise a real minimum delta
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/timer-sun4i: Advertise a real minimum delta sun4i_clkevt_next_event() compensates for the timer stop/start synchronization delay by programming evt - TIMER_SYNC_TICKS into the hardware interval register. The clockevent device currently advertises TIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed to call set_next_event() with evt == TIMER_SYNC_TICKS. That programs a zero-tick interval. With oneshot/highres/nohz timer operation this can leave the next event stuck, which was observed as a boot hang on Allwinner D1 after the clockevents core started reusing forced minimum-delta events. Advertise one extra tick instead, so the smallest event accepted by the core still programs at least one hardware tick after the synchronization compensation.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 12e1480bcb4920c1b02b3793cb48756497919a60 ~ 0cc4b14d7401d50e53a01f1554147ee075ee6943 -
Linux Linux 3.13 -

II. Public POCs for CVE-2026-93219

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-93219

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-93219 (8)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93787 8.1 HIGH smb: client: bound dirent name against end of SMB response in cifs_filldir
CVE-2026-93224 8.1 HIGH svcrdma: Fix unmatched rn_unregister on failed accept

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93219

No comments yet

Leave a comment