CVE-2023-53144: erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms
First published: Fri May 02 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms As the call trace shown, the root cause is kunmap incorrect pages: BUG: kernel NULL pointer dereference, address: 00000000 CPU: 1 PID: 40 Comm: kworker/u5:0 Not tainted 6.2.0-rc5 #4 Workqueue: erofs_worker z_erofs_decompressqueue_work EIP: z_erofs_lzma_decompress+0x34b/0x8ac z_erofs_decompress+0x12/0x14 z_erofs_decompress_queue+0x7e7/0xb1c z_erofs_decompressqueue_work+0x32/0x60 process_one_work+0x24b/0x4d8 ? process_one_work+0x1a4/0x4d8 worker_thread+0x14c/0x3fc kthread+0xe6/0x10c ? rescuer_thread+0x358/0x358 ? kthread_complete_and_exit+0x18/0x18 ret_from_fork+0x1c/0x28 ---[ end trace 0000000000000000 ]--- The bug is trivial and should be fixed now. It has no impact on !HIGHMEM platforms.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-53144?
CVE-2023-53144 has a moderate severity rating due to its potential to cause a kernel NULL pointer dereference.
How do I fix CVE-2023-53144?
Fix CVE-2023-53144 by updating your Linux kernel to a version that includes the patches addressing this issue.
Which Linux kernel versions are affected by CVE-2023-53144?
CVE-2023-53144 affects various versions of the Linux kernel that utilize LZMA on HIGHMEM platforms.
Is CVE-2023-53144 exploitable remotely?
CVE-2023-53144 is not classified as remotely exploitable, but it poses a risk if an attacker has local access to the system.
What symptoms indicate a potential CVE-2023-53144 exploit?
Symptoms of a CVE-2023-53144 exploit may include unexpected system crashes or instability linked to kernel operations.
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