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).
CVE-2026-43128
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-43128
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "70542b69abff34d24b11ae0bb200cc7a766d18df",
"versionType": "git"
},
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "b324327ff6f48d8065dca67eb3b91357e72726bd",
"versionType": "git"
},
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "ba3bf0f1bf1d5d0404678485e872980532fcc2c4",
"versionType": "git"
},
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf",
"versionType": "git"
},
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "40126bcbefa79ea86672e05dae608596bab38319",
"versionType": "git"
},
{
"status": "affected",
"version": "1e4df4a21c5ac722df1099eee30cad9246c889b5",
"lessThan": "104016eb671e19709721c1b0048dd912dc2e96be",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/umem_dmabuf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/umem_dmabuf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43128
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40031 · Revision 1
- Added to Heist Feed
- Publisher date