CVE-2023-3812 — Out-of-bounds Write in Kernel
Severity
7.8HIGHNVD
EPSS
0.0%
top 99.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 24
Latest updateFeb 14
Description
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages3 packages
Also affects: Enterprise Linux 8.0, 9.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-v4mv-7g6h-5vh8: An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big)↗2023-07-24
CVEList
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OSV▶
CVE-2023-3812: An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big)↗2023-07-24
📋Vendor Advisories
4Microsoft
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Debian▶
CVE-2023-3812: linux - An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP devi...↗2023
Red Hat
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💬Community
1Bugzilla▶
CVE-2023-3812 kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags↗2023-07-19