Process corruption via byte-swapped uprobe instruction handling
Published Nov 8, 2024 · Updated May 11, 2026
Improper instruction handling in affected Linux kernels allows local users to corrupt probed process execution on big-endian arm64 systems. The arm64 uprobes analyzer reads little-endian bytes as native u32 values, so byte-swapped opcodes can be rejected, stepped unsafely, or simulated incorrectly. Exploitation requires local low-privileged access and an active uprobe on a vulnerable big-endian arm64 kernel; the demonstrated consequence is incorrect process output.
Summary
What happened
Improper instruction handling in affected Linux kernels allows local users to corrupt probed process execution on big-endian arm64 systems. The arm64 uprobes analyzer reads little-endian bytes as native u32 values, so byte-swapped opcodes can be rejected, stepped unsafely, or simulated incorrectly. Exploitation requires local low-privileged access and an active uprobe on a vulnerable big-endian arm64 kernel; the demonstrated consequence is incorrect process output.
The record
- CVE
- CVE-2024-50194
- Published
- Nov 8, 2024
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 8, 2024CVE publishedPublication date reported by the CVE source.
- May 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.10
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <13f8f1e05f1dc36dbba6cba0ae03354c0dafcde7
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <14841bb7a531b96e2dde37423a3b33e75147c60d
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <3d2530c65be04e93720e30f191a7cf1a3aa8b51c
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <8165bf83b8a64be801d59cd2532b0d1ffed74d00
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <b6a638cb600e13f94b5464724eaa6ab7f3349ca2
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <cf60d19d40184e43d9a624e55a0da73be09e938d
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <cf9ddf9ed94c15564a05bbf6e9f18dffa0c7df80
- Affected versionversion=9842ceae9fa8deae141533d52a6ead7666962c09 <e6ab336213918575124d6db43dc5d3554526242e
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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