Kernel crash via inconsistent virtio header validation
Published Aug 17, 2024 · Updated May 23, 2026
Denial of service in the Linux kernel allows local users to crash affected systems by sending crafted packets through a packet socket. In virtio_net_hdr_to_skb(), missing checks leave segmented buffers non-linear and fail to reject inconsistent gso_size and remainder relationships before checksum handling. Low-privileged local access is required, and successful exploitation interrupts the host by crashing its kernel.
Summary
What happened
Denial of service in the Linux kernel allows local users to crash affected systems by sending crafted packets through a packet socket. In virtio_net_hdr_to_skb(), missing checks leave segmented buffers non-linear and fail to reject inconsistent gso_size and remainder relationships before checksum handling. Low-privileged local access is required, and successful exploitation interrupts the host by crashing its kernel.
The record
- CVE
- CVE-2024-43817
- Published
- Aug 17, 2024
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 17, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 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=0f6925b3e8da0dbbb52447ca8a8b42b371aac7db <27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f
- Affected versionversion=0f6925b3e8da0dbbb52447ca8a8b42b371aac7db <5b1997487a3f3373b0f580c8a20b56c1b64b0775
- Affected versionversion=0f6925b3e8da0dbbb52447ca8a8b42b371aac7db <90d41ebe0cd4635f6410471efc1dd71b33e894cf
- Affected versionversion=0f6925b3e8da0dbbb52447ca8a8b42b371aac7db <e269d79c7d35aa3808b1f3c1737d63dab504ddc8
- Affected versionversion=0f6925b3e8da0dbbb52447ca8a8b42b371aac7db <e9164903b8b303c34723177b02fe91e49e3c4cd7
- Affected versionversion=16851e34b621bc7e652c508bb28c47948fb86958
- Affected versionversion=2789bc090f4a2caef0cceb3f108867de608bb23a
- Affected versionversion=4.14.242 <4.15
- Affected versionversion=4.19.201 <4.20
- Affected versionversion=5.10.39 <5.11
- Affected versionversion=5.12
- Affected versionversion=5.4.121 <5.5
- Affected versionversion=a05fb4ac72fb2ddbdcb135c87b0087ac59fa4de4
- Affected versionversion=a36703d08c83b1488a2f2922f0dc4263125ccd2d
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
Public exploit references
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Technologies
Your stack
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Your stack
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