CVE-2026-97618

CVE CVE-2026-97618EUVD EUVD-2026-86749Published 2026-09-25T10:22:25.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: don't overconsume buffers when using MSG_TRUNC When a recv/recvmsg is issued with MSG_TRUNC and the incoming packet is larger than the provided buffer, the net layer returns the full length of the packet rather than the number of bytes actually copied into the buffer. As a result, io_uring advances more of the provided buffer ring than was actually filled. Use the actual filled region size to consume the buffer, but still return the full size to preserve MSG_TRUNC semantics. Take care with multishot, because that seems to already truncate the consumption based on the available payload size. This was reported in https://github.com/axboe/liburing/issues/1619. [axboe: fold in size_t unsigned fix]

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux ae98dbf43d755b4e111fcd086e53939bef3e9a1a <927d96f91c582b319d104ecf50ec935a8dc29193; ae98dbf43d755b4e111fcd086e53939bef3e9a1a <2e70ea75c7bb38a6dc212975f887310f14f7c043; 6.12; patch: 7.3-rc3; patch: 7.2.7; patch: 6.18.53; patch: 0; ae98dbf43d755b4e111fcd086e53939bef3e9a1a <6028b543884f8735e057ec9eea4908cd61cab230

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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