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In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: handle inline data with a nonzero offset nvmet_rdma_use_inline_sg()… (CVE-2026-72129)

0
Unknown
Published: 08/15/2026 (08/15/2026, 06:32:13 UTC)
Source: GCVE Database

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: handle inline data with a nonzero offset nvmet_rdma_use_inline_sg() maps the host-controlled inline data offset into the per-command inline scatterlist. The bounds check admits any offset with off + len <= inline_data_size, but the mapping still assumes the data begins in the first inline page: sg->offset = off; sg->length = min_t(int, len, PAGE_SIZE - off); When a port is configured with inline_data_size > PAGE_SIZE (settable up to max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size] makes "PAGE_SIZE - off" underflow, so sg->length is set to ~4 GiB and the block backend reads far past the first inline page. num_pages(len) also ignores the offset, so an in-bounds offset whose [off, off+len) span crosses a page boundary under-counts the scatterlist. Map the offset properly: split it into a page index and an in-page offset, start the scatterlist at that page, and size the page count from page_off + len. Because the request scatterlist may now start at inline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL identity test in nvmet_rdma_release_rsp() to a range test; otherwise the persistent inline scatterlist is mistaken for an allocated one and nvmet_req_free_sgls() frees an inline page (and warns in free_large_kmalloc()).

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-xp9m-f2x6-j3rp
Osv Schema Version
1.4.0
Aliases
["CVE-2026-72129"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a808b75bf8831d5394ffabc

Added to database: 08/15/2026, 15:53:25 UTC

Last updated: 08/15/2026, 15:54:50 UTC

Views: 1

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