CVE-2026-68440

In the Linux kernel, the following vulnerability has been resolved: net: txgbe: fix heap overflow when reading module EEPROM txgbe_read_eeprom_hostif() always copies round_up(length, 4) bytes into the caller buffer, which ethtool allocates with exactly 'length' bytes. A non-4-aligned length therefore causes an out-of-bounds write. Copy only the remaining bytes on the final dword instead.

Package Linux Kernel
Published 2026-08-12
Last modified 2026-08-12
Patch available
Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.1.6, 7.2-rc5 and their respective stable series.

Affected from
≥ 6.19
Fixed in
✓ 7.1.6 7.1.x ✓ 7.2-rc5

References

2 total

Frequently asked questions

  • What is CVE-2026-68440?

    CVE-2026-68440 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.1.6 and 7.2-rc5. CVE-2026-68440 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-68440?

    Yes. CVE-2026-68440 has been patched. Fixed versions include 7.1.6 and 7.2-rc5. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-68440 actively exploited?

    No. CVE-2026-68440 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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