CVE-2023-54154
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel SCSI Target Core Component

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fix target_cmd_counter leak The target_cmd_counter struct allocated via target_alloc_cmd_counter() is never freed, resulting in leaks across various transport types, e.g.: unreferenced object 0xffff88801f920120 (size 96): comm "sh", pid 102, jiffies 4294892535 (age 713.412s) hex dump (first 32 bytes): 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 38 01 92 1f 80 88 ff ff ........8....... backtrace: [<00000000e58a6252>] kmalloc_trace+0x11/0x20 [<0000000043af4b2f>] target_alloc_cmd_counter+0x17/0x90 [target_core_mod] [<000000007da2dfa7>] target_setup_session+0x2d/0x140 [target_core_mod] [<0000000068feef86>] tcm_loop_tpg_nexus_store+0x19b/0x350 [tcm_loop] [<000000006a80e021>] configfs_write_iter+0xb1/0x120 [<00000000e9f4d860>] vfs_write+0x2e4/0x3c0 [<000000008143433b>] ksys_write+0x80/0xb0 [<00000000a7df29b2>] do_syscall_64+0x42/0x90 [<0000000053f45fb8>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Free the structure alongside the corresponding iscsit_conn / se_sess parent.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-05-07
AI Q&A
2025-12-25
EPSS Evaluated
2026-05-05
NVD
CVE-2023-54154
EUVD
EUVD-2023-60291
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel *
linux kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?

The vulnerability is caused by a memory leak in the Linux kernel's target_cmd_counter struct. To mitigate this vulnerability, you should update your Linux kernel to a version where this issue is fixed, as the fix involves freeing the target_cmd_counter structure alongside the corresponding iscsit_conn / se_sess parent. No other immediate mitigation steps are provided.


Can you explain this vulnerability to me?

This vulnerability is a memory leak in the Linux kernel's SCSI target core. Specifically, the target_cmd_counter structure allocated by target_alloc_cmd_counter() is never freed, causing memory to be leaked across various transport types. This means that allocated memory is not properly released, which can lead to resource exhaustion over time.


How can this vulnerability impact me? :

The impact of this vulnerability is that it can cause memory leaks in the Linux kernel, potentially leading to increased memory usage and resource exhaustion. Over time, this could degrade system performance or cause instability due to the accumulation of unreleased memory.


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