CVE - CVE-2022-49076

CVE-ID
CVE-2022-49076	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023 URL:https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023 MISC:https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c URL:https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c MISC:https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c URL:https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c MISC:https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 URL:https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 MISC:https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f URL:https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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