CVE-2026-46176
- Source
- https://cve.org/CVERecord?id=CVE-2026-46176
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46176.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-46176
- Downstream
- Related
- Published
- 2026-05-28T09:36:30.398Z
- Modified
- 2026-07-09T18:30:07.685115966Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
RDMA/mlx5: Fix error path fall-through in mlx5ibdevressrq_init()
mlx5ibdevressrqinit() allocates two SRQs, s0 and s1. When ibcreatesrq() fails for s1, the error branch destroys s0 but falls through and unconditionally assigns the freed s0 and the ERRPTR 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 ERRPTR as already initialised; users in mlx5ibcreateqp() dereference the freed SRQ or ERRPTR via tomsrq(devr->s0)->msrq.srqn; and mlx5ibdevrescleanup() dereferences the ERR_PTR and double-frees s0 on teardown.
Fix by adding the same
goto unlockin the s1 failure path. - Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46176.json" }- References
-
- https://git.kernel.org/stable/c/6fd93142dd1d09000c3750af08270f5792523fe9
- https://git.kernel.org/stable/c/a13c2ac4d480b734342c6fbf8249fc48afd675f3
- https://git.kernel.org/stable/c/b087913ae88256df66620f7ba0a9776716aeef7e
- https://git.kernel.org/stable/c/bc2cf5935b4665172235341163315905197ae91d
- https://git.kernel.org/stable/c/c488df06bd552bb8b6e14fa0cfd5ad986c6e9525
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46176.json
- https://access.redhat.com/errata/RHSA-2026:30848
- https://access.redhat.com/errata/RHSA-2026:33215
- https://access.redhat.com/errata/RHSA-2026:33685
- https://access.redhat.com/errata/RHSA-2026:34094
- https://access.redhat.com/security/cve/CVE-2026-46176
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46176.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-46176
- https://bugzilla.redhat.com/show_bug.cgi?id=2482594
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb6334d2356fc0922ed01457960f74923058a353aFixeda13c2ac4d480b734342c6fbf8249fc48afd675f3
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5895e70f2e6e8dc67b551ca554d6fcde0a7f0467Fixedbc2cf5935b4665172235341163315905197ae91dFixedb087913ae88256df66620f7ba0a9776716aeef7eFixed6fd93142dd1d09000c3750af08270f5792523fe9Fixedc488df06bd552bb8b6e14fa0cfd5ad986c6e9525
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.64Fixed6.6.140
Affected versions
v6.*
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.105
v6.6.106
v6.6.107
v6.6.108
v6.6.109
v6.6.110
v6.6.111
v6.6.112
v6.6.113
v6.6.114
v6.6.115
v6.6.116
v6.6.117
v6.6.118
v6.6.119
v6.6.120
v6.6.121
v6.6.122
v6.6.123
v6.6.124
v6.6.125
v6.6.126
v6.6.127
v6.6.128
v6.6.129
v6.6.130
v6.6.131
v6.6.132
v6.6.133
v6.6.134
v6.6.135
v6.6.136
v6.6.137
v6.6.138
v6.6.139
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.6.99
Linux / Kernel
Package
- Name
- Kernel