Bug 2169719 (CVE-2023-1249) - CVE-2023-1249 kernel: missing mmap_lock in file_files_note that could possibly lead to a use after free in the coredump code
Summary: CVE-2023-1249 kernel: missing mmap_lock in file_files_note that could possibl...
Keywords:
Status: NEW
Alias: CVE-2023-1249
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Nobody
QA Contact:
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Depends On: 2169741 2179160
Blocks: 2156315
TreeView+ depends on / blocked
 
Reported: 2023-02-14 13:37 UTC by Alex
Modified: 2023-07-07 08:35 UTC (History)
33 users (show)

Fixed In Version: Linux kernel 5.18-rc1
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.
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Description Alex 2023-02-14 13:37:24 UTC 
A flaw in the Linux Kernel found. When performing core dump, the use after free could happen in file_files_note function.

Reference:
https://patchwork.kernel.org/project/linux-fsdevel/patch/87iltzn3nd.fsf_-_@email.froward.int.ebiederm.org/
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