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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-modules-extra-matched  (opens in a new tab)

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  • Snyk IDSNYK-RHEL10-KERNELMODULESEXTRAMATCHED-14094754
  • published22 Nov 2025
  • disclosed15 Oct 2025
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Introduced: 15 Oct 2025

CVE-2025-39990  (opens in a new tab)
CWE-476  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra-matched package and not the kernel-modules-extra-matched package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

bpf: Check the helper function is valid in get_helper_proto

kernel test robot reported verifier bug [1] where the helper func pointer could be NULL due to disabled config option.

As Alexei suggested we could check on that in get_helper_proto directly. Marking tail_call helper func with BPF_PTR_POISON, because it is unused by design.

[1] https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@intel.com