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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2025-21666

vsock: prevent null-ptr-deref in vsock_*[has_data|has_space]

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] Recent reports have shown how we sometimes call vsock_*_has_data() when a vsock socket has been de-assigned from a transport (see attached links), but we shouldn't. Previous commits should have solved the real problems, but we may have more in the future, so to avoid null-ptr-deref, we can return 0 (no space, no data available) but with a warning. This way the code should continue to run in a nearly consistent state and have a warning that allows us to debug future problems.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < daeac89cdb03d30028186f5ff7dc26ec8fa843e7affected
  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 9e5fed46ccd2c34c5fa5a9c8825ce4823fdc853eaffected
  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < b52e50dd4fabd12944172bd486a4f4853b7f74ddaffected
  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < bc9c49341f9728c31fe248c5fbba32d2e81a092baffected
  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < c23d1d4f8efefb72258e9cedce29de10d057f8caaffected
  • c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 91751e248256efc111e52e15115840c35d85abafaffected

Linux Linux

Default version status: affected

  • 5.5affected
  • 0 to < 5.5unaffected
  • 5.10.234 to ≤ 5.10.*unaffected
  • 5.15.177 to ≤ 5.15.*unaffected
  • 6.1.127 to ≤ 6.1.*unaffected
  • 6.6.74 to ≤ 6.6.*unaffected
  • 6.12.11 to ≤ 6.12.*unaffected
  • 6.13 to ≤ *unaffected

References