CVE-2026-43128
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
RDMA/umem: Fix double dma_buf_unpin in failure path
In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf is immediately unpinned but the umem_dmabuf->pinned flag is still set. Then, when ib_umem_release() is called, it calls ib_umem_dmabuf_revoke() which will call dma_buf_unpin() again. Fix this by removing the immediate unpin upon failure and just let the ib_umem_release/revoke path handle it. This also ensures the proper unmap-unpin unwind ordering if the dmabuf_map_pages call happened to fail due to dma_resv_wait_timeout (and therefore has a non-NULL umem_dmabuf->sgt).
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | 70542b69abff34d24b11ae0bb200cc7a766d18df | Unavailable | None listed |
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | b324327ff6f48d8065dca67eb3b91357e72726bd | Unavailable | None listed |
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | ba3bf0f1bf1d5d0404678485e872980532fcc2c4 | Unavailable | None listed |
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf | Unavailable | None listed |
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | 40126bcbefa79ea86672e05dae608596bab38319 | Unavailable | None listed |
| 1e4df4a21c5ac722df1099eee30cad9246c889b5 | affected | git | 104016eb671e19709721c1b0048dd912dc2e96be | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.16 | Unavailable | None listed |
| 6.1.165 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.128 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.75 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.16 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.6 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |