CVE-2022-49076

HIGH EPSS 14.7%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
14.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.9.12  –  <5.10.111
linuxlinux_kernel*≥5.11  –  <5.15.34
linuxlinux_kernel*≥5.16  –  <5.16.20
linuxlinux_kernel*≥5.17  –  <5.17.3
linuxlinux_kernel5.18any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
    Patch