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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-53236

tcp: restrict SO_ATTACH_FILTER to priv users

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: tcp: restrict SO_ATTACH_FILTER to priv users This patch restricts the use of SO_ATTACH_FILTER (cBPF) on TCP sockets to users with CAP_NET_ADMIN capability. This blocks potential side-channel attack where an unprivileged application attaches a filter to leak TCP sequence/acknowledgment numbers.

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

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3747de241a66ef2c7032d2cc2b826a47c5fa0f6aaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ecfe9171b26ae3eed0cd8bab7a943e9e2c9e51baaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 82b3e7ce10c53fc12aab8904745603efc74f8c07affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ede69b8f6670600e534591664584f810d7c385f9affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c68517a3e18e20997808821c5559d0cba4d776c1affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5d39580f68e6ddeedd15e587282207489dfb3da2affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 6.1.176 to ≤ 6.1.*unaffected
  • 6.6.143 to ≤ 6.6.*unaffected
  • 6.12.94 to ≤ 6.12.*unaffected
  • 6.18.36 to ≤ 6.18.*unaffected
  • 7.0.13 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References