CVE-2026-93219: Linux vulnerability

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

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 19, 2026, 09:07 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 24, 2026, 15:10 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

0ADP providers

9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Sep 17, 2026, 16:02 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Sep 24, 2026, 15:10 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 19, 2026, 09:07 UTC (UTC+00:00)

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943CVE reference, Linux
https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98CVE reference, Linux
https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7CVE reference, Linux
https://git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44CVE reference, Linux
https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dcCVE reference, Linux
https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252CVE reference, Linux
https://git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bbCVE reference, Linux
https://git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630eCVE reference, Linux

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60, 12e1480bcb4920c1b02b3793cb48756497919a60unaffected

LinuxLinux3.13, 0, 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3affected

Weakness

CWE details

No CWE listed

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