Bug 2173434 (CVE-2023-1075) - CVE-2023-1075 kernel: net/tls: tls_is_tx_ready() checked list_entry
Summary: CVE-2023-1075 kernel: net/tls: tls_is_tx_ready() checked list_entry
Keywords:
Status: NEW
Alias: CVE-2023-1075
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2183538 2212176 2212178 2212179 2212175 2212177
Blocks: 2172923
TreeView+ depends on / blocked
 
Reported: 2023-02-26 17:06 UTC by Alex
Modified: 2023-07-07 08:32 UTC (History)
42 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A memory leak flaw was found in the Linux kernel's TLS protocol. This issue could allow a local user unauthorized access to some memory.
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Last Closed:
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Description Alex 2023-02-26 17:06:10 UTC 
A flaw in the Linux Kernel found. The tls_is_tx_ready() incorrectly checks for list emptiness, potentially accessing a type confused entry to the list_head, leaking the last byte of the confused field that overlaps with rec->tx_ready.


Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ffe2a22562444720b05bdfeb999c03e810d84cbb
Comment 3 Alex 2023-06-04 14:25:00 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2212175]
Comment 5 Justin M. Forbes 2023-06-05 12:33:39 UTC 
This was fixed for Fedora with the 6.1.11 stable kernel updates.
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