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

bpf: sockmap: fix tail fragment offset in bpf_msg_push_data

When bpf_msg_push_data() inserts data in the middle of a scatterlist
entry, it splits the original entry into a left fragment and a right
fragment.

The right fragment offset is page-local, but the code advances it with
`start`, which is the message-global insertion point. For inserts into a
non-first SG entry, this over-advances the offset and leaves the split
layout inconsistent.

Advance the right fragment offset by the fragment-local delta,
`start - offset`, which matches the length removed from the front of the
original entry.

https://git.kernel.org/stable/c/3075c21d2d76c0067f4a382765b43d6cc10470f1

https://git.kernel.org/stable/c/5e19028667963fb371ebb00cecc2a473ef92056b

https://git.kernel.org/stable/c/63f64a510c7917658ddf4d073ece73914ee25346

https://git.kernel.org/stable/c/96b72672ce849a1402730238e64d9b20bf06a96d

https://git.kernel.org/stable/c/aeb95146848d12206e1b2cfacd4f40e21ce81d94

https://git.kernel.org/stable/c/d81b323af2dcee47573907ccb89c0df9b45cb2e2

https://git.kernel.org/stable/c/f14609d8146707452e0822f3c8154674ce677251

https://git.kernel.org/stable/c/f72eed9b84fb771019a955908132410a9ba9ea3f

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