RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() mlx5_ib_dev_res_srq_init() allocates two SRQs, s0 and s1. When ib_create_srq() fails for s1, the error branch destroys s0 but falls through and unconditionally assigns the freed s0 and the ERR_PTR s1 to devr->s0 and devr->s1. This leads to several problems: the lock-free fast path checks "if (devr->s1) return 0;" and treats the ERR_PTR as already initialised; users in mlx5_ib_create_qp() dereference the freed SRQ or ERR_PTR via to_msrq(devr->s0)->msrq.srqn; and mlx5_ib_dev_res_cleanup() dereferences the ERR_PTR and double-frees s0 on teardown. Fix by adding the same `goto unlock` in the s1 failure path.
CVE-2026-46176
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-2026-46176
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": "b6334d2356fc0922ed01457960f74923058a353a",
"lessThan": "a13c2ac4d480b734342c6fbf8249fc48afd675f3",
"versionType": "git"
},
{
"status": "affected",
"version": "5895e70f2e6e8dc67b551ca554d6fcde0a7f0467",
"lessThan": "bc2cf5935b4665172235341163315905197ae91d",
"versionType": "git"
},
{
"status": "affected",
"version": "5895e70f2e6e8dc67b551ca554d6fcde0a7f0467",
"lessThan": "b087913ae88256df66620f7ba0a9776716aeef7e",
"versionType": "git"
},
{
"status": "affected",
"version": "5895e70f2e6e8dc67b551ca554d6fcde0a7f0467",
"lessThan": "6fd93142dd1d09000c3750af08270f5792523fe9",
"versionType": "git"
},
{
"status": "affected",
"version": "5895e70f2e6e8dc67b551ca554d6fcde0a7f0467",
"lessThan": "c488df06bd552bb8b6e14fa0cfd5ad986c6e9525",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.64",
"lessThan": "6.6.140",
"versionType": "semver"
}
],
"programFiles": [
"drivers/infiniband/hw/mlx5/main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.88",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.30",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.7",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/mlx5/main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46176
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40150 · Revision 1
- Added to Heist Feed
- Publisher date