Vulnerability details
CVE-2022-49076
Linux Linux
RDMA/hfi1: Fix use-after-free bug for mm struct
CVSS 3.1
7.8High
Official description
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 MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 5.10 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5732f83596f8a573f2cde814cc76a54e1a8995c7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3d2a9d642512c21a12d19b9250e7a835dcb41a79 ≤ v < 0b7186d657ee55e2cdefae498f07d5c1961e8023 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3d2a9d642512c21a12d19b9250e7a835dcb41a79 ≤ v < 5a9a1b24ddb510715f8f621263938186579a965c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3d2a9d642512c21a12d19b9250e7a835dcb41a79 ≤ v < 5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3d2a9d642512c21a12d19b9250e7a835dcb41a79 ≤ v < 2bbac98d0930e8161b1957dc0ec99de39ade1b3c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3d2a9d642512c21a12d19b9250e7a835dcb41a79 ≤ v < 9ca11bd8222a612de0d2f54d050bfcf61ae2883f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5.9.12 ≤ v < 5.10 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7
- https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
- https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023
- https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c
- https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c
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Details
- Published
- 2025-02-26
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.25%
Probability of exploitation in 30 days
17.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-416Use After Free