Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2025-68746 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

spi: tegra210-quad: Fix timeout handling

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2025-68746 is recorded against 2 packages.

  • kernel (from 6.18.0 up to 6.18.2)
  • unknown

Timeline and source

Published on 24 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-68746 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-24
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 6.18.0 6.18.2
unknown — —

Similar Threats

Site Security Check

Is kernel part of your stack?

CVE-2025-68746 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.