Kernel use-after-free via concurrent ILA mapping requests
Published Jan 15, 2025 · Updated May 11, 2026
Use-after-free in Linux kernel ILA allows local users to trigger invalid kernel-memory access through concurrent mapping-add requests. ila_add_mapping() permits multiple threads to call nf_register_net_hooks() concurrently, leaving an ILA rhashtable object freed while the IPv6 input hook still looks it up. Exploitation requires local access and the ability to submit concurrent ILA_CMD_ADD commands; the demonstrated consequence is an invalid read detected by KASAN during IPv6 packet processing.
Summary
What happened
Use-after-free in Linux kernel ILA allows local users to trigger invalid kernel-memory access through concurrent mapping-add requests. ila_add_mapping() permits multiple threads to call nf_register_net_hooks() concurrently, leaving an ILA rhashtable object freed while the IPv6 input hook still looks it up. Exploitation requires local access and the ability to submit concurrent ILA_CMD_ADD commands; the demonstrated consequence is an invalid read detected by KASAN during IPv6 packet processing.
The record
- CVE
- CVE-2024-57900
- Published
- Jan 15, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-416, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 15, 2025CVE 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?
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- Affected versionversion=4.5
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <1638f430f8900f2375f5de45508fbe553997e190
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <17e8fa894345e8d2c7a7642482267b275c3d4553
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <260466b576bca0081a7d4acecc8e93687aa22d0e
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <3d1b63cf468e446b9feaf4e4e73182b9cc82f460
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <ad0677c37c14fa28913daea92d139644d7acf04e
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <d3017895e393536b234cf80a83fc463c08a28137
- Affected versionversion=7f00feaf107645d95a6d87e99b4d141ac0a08efd <eba25e21dce7ec70e2b3f121b2f3a25a4ec43eca
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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