CVE-2022-49076
Linux Kernel RDMA hfi1 Use-After-Free Vulnerability
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.
INFO
Published Date :
Feb. 26, 2025, 7 a.m.
Last Modified :
March 24, 2025, 5:42 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2022-49076.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49076 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49076 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 24, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.20 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.34 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.9.12 up to (excluding) 5.10.111 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 27, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023 Added Reference https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c Added Reference https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c Added Reference https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 Added Reference https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49076 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49076
weaknesses.