CVE-2022-49076

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Source
https://cve.org/CVERecord?id=CVE-2022-49076
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49076.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49076
Downstream
Related
Published
2025-02-26T01:54:39.251Z
Modified
2026-03-12T03:24:34.281068Z
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/hfi1: Fix use-after-free bug for mm struct
Details

In the Linux kernel, the following vulnerability has been resolved:

RDMA/hfi1: Fix use-after-free bug for mm struct

Under certain conditions, such as MPIAbort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1mmurbunregister() then drops the last reference and the mm is freed before the final use in hfi1releaseuserpages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmapsem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49076.json"
}
References

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
Introduced
3d2a9d642512c21a12d19b9250e7a835dcb41a79
Fixed
5f54364ff6cfcd14cddf5441c4a490bb28dd69f7
Fixed
9ca11bd8222a612de0d2f54d050bfcf61ae2883f
Fixed
0b7186d657ee55e2cdefae498f07d5c1961e8023
Fixed
5a9a1b24ddb510715f8f621263938186579a965c
Fixed
2bbac98d0930e8161b1957dc0ec99de39ade1b3c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
5732f83596f8a573f2cde814cc76a54e1a8995c7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49076.json"