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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-98323

RDMA/siw: Bound fragmented header copies by the remaining length

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Bound fragmented header copies by the remaining length siw_get_hdr() can receive an extended DDP/RDMAP header across more than one TCP callback. The first callback may receive most of the header, while the next one still limits the copy to hdrlen - MIN_DDP_HDR instead of the number of missing bytes. This makes the destination move past the end of the header and overwrite the receive state, including fpdu_part_rcvd. A later callback can then use a negative fpdu_part_rcvd value as a copy offset, which creates an OOB write. Use the number of header bytes already received when calculating the next copy length.

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

  • e3917c85f41ef1df64e27dc0e46ab0d803c5e73e to < 2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7affected
  • 308cd50f174c95a507527037f4de1a0396aa4325 to < af9f5b474a260ad23ffb9793d716a5e3bbce3b48affected
  • 754209850df8367c954ac1de7671c7430b1f342c to < 262dcd809723723ed8a4e05437ec7e9c21a8f17eaffected
  • 754209850df8367c954ac1de7671c7430b1f342c to < eb4d7a946970469b3ab0c762432bf161d5b0836caffected
  • 754209850df8367c954ac1de7671c7430b1f342c to < 8628f8ebf41669302513fb3f0bf0eba38b226742affected
  • 754209850df8367c954ac1de7671c7430b1f342c to < b72dcfb9bf1f0f0147cda03dc59e4002a315067faffected
  • 754209850df8367c954ac1de7671c7430b1f342c to < e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9daffected
  • 754209850df8367c954ac1de7671c7430b1f342c to < 9ff797e516dbc1ecb73701ec4c24055712d44411affected
  • e09caa38e10bcf027100cc22b0e3cc745a39ef0aaffected
  • 0c14f795a9eab9344230f9933798b8ee496f497daffected
  • 7fada7c6962219b6fc4ff4e62e46a936af110dd9affected
  • 5.10.150 to < 5.10.271affected
  • 5.15.75 to < 5.15.222affected
  • 5.4.220 to < 5.5affected
  • 5.19.17 to < 5.20affected
  • 6.0.3 to < 6.1affected

Linux Linux

Default version status: affected

  • 6.1affected
  • 0 to < 6.1unaffected
  • 5.10.271 to ≤ 5.10.*unaffected
  • 5.15.222 to ≤ 5.15.*unaffected
  • 6.1.189 to ≤ 6.1.*unaffected
  • 6.6.158 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.54 to ≤ 6.18.*unaffected
  • 7.2.8 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References