Summary
In the Linux kernel, the following vulnerability has been resolved: HID: amd_sfh: Fix for shift...
In the Linux kernel, the following vulnerability has been resolved:
HID: amd_sfh: Fix for shift-out-of-bounds
Shift operation of 'exp' and 'shift' variables exceeds the maximum number
of shift values in the u32 range leading to UBSAN shift-out-of-bounds.
...
[ 6.120512] UBSAN: shift-out-of-bounds in drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c:149:50
[ 6.120598] shift exponent 104 is too large for 64-bit type 'long unsigned int'
[ 6.120659] CPU: 4 PID: 96 Comm: kworker/4:1 Not tainted 6.4.0amd_1-next-20230519-dirty #10
[ 6.120665] Hardware name: AMD Birman-PHX/Birman-PHX, BIOS SFH_with_HPD_SEN.FD 04/05/2023
[ 6.120667] Workqueue: events amd_sfh_work_buffer [amd_sfh]
[ 6.120687] Call Trace:
[ 6.120690]
[ 6.120694] dump_stack_lvl+0x48/0x70
[ 6.120704] dump_stack+0x10/0x20
[ 6.120707] ubsan_epilogue+0x9/0x40
[ 6.120716] __ubsan_handle_shift_out_of_bounds+0x10f/0x170
[ 6.120720] ? psi_group_change+0x25f/0x4b0
[ 6.120729] float_to_int.cold+0x18/0xba [amd_sfh]
[ 6.120739] get_input_rep+0x57/0x340 [amd_sfh]
[ 6.120748] ? __schedule+0xba7/0x1b60
[ 6.120756] ? __pfx_get_input_rep+0x10/0x10 [amd_sfh]
[ 6.120764] amd_sfh_work_buffer+0x91/0x180 [amd_sfh]
[ 6.120772] process_one_work+0x229/0x430
[ 6.120780] worker_thread+0x4a/0x3c0
[ 6.120784] ? __pfx_worker_thread+0x10/0x10
[ 6.120788] kthread+0xf7/0x130
[ 6.120792] ? __pfx_kthread+0x10/0x10
[ 6.120795] ret_from_fork+0x29/0x50
[ 6.120804]
...
Fix this by adding the condition to validate shift ranges.
Impact
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Frequently Asked Questions
- What is CVE-2023-53703? CVE-2023-53703 is a unknown-severity security vulnerability. No fixed version is listed yet.
- Is there a fix for CVE-2023-53703? No fixed version is listed for CVE-2023-53703 yet. Monitor the advisory for updates and apply mitigations in the interim.
- Is CVE-2023-53703 exploitable, and should I be worried? Whether CVE-2023-53703 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2023-53703 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.