CVE-2025-68746
In the Linux kernel, the following vulnerability has been resolved: spi: tegra210-quad: Fix timeout handling When the CPU that the QSPI interrupt handler runs on (typically CPU 0) is excessively busy, it can lead to rare cases of the IRQ thread not running before the transfer timeout is reached. While handling the timeouts, any pending transfers are cleaned up and the message that they correspond to is marked as failed, which leaves the curr_xfer field pointing at stale memory. To avoid this, clear curr_xfer to NULL upon timeout and check for this condition when the IRQ thread is finally run. While at it, also make sure to clear interrupts on failure so that new interrupts can be run. A better, more involved, fix would move the interrupt clearing into a hard IRQ handler. Ideally we would also want to signal that the IRQ thread no longer needs to be run after the timeout is hit to avoid the extra check for a valid transfer.
Affected versions
Linux kernel versions
5.12
and later are affected. Fixed in
5.15.198,
6.1.160,
6.6.120,
6.12.63,
6.17.13,
6.18.2,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68746 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc
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PatchKernel patch commithttps://git.kernel.org/stable/c/551060efb156c50fe33799038ba8145418cfdeef
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PatchKernel patch commithttps://git.kernel.org/stable/c/83309dd551cfd60a5a1a98d9cab19f435b44d46d
Frequently asked questions
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What is CVE-2025-68746?
CVE-2025-68746 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.12 onward and has been patched in 5.15.198, 6.1.160, 6.6.120 and others. CVE-2025-68746 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68746?
Yes — CVE-2025-68746 has been patched. Fixed versions include 5.15.198, 6.1.160, 6.6.120 and others. If you are running Linux kernel 5.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68746 actively exploited?
No — CVE-2025-68746 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.