PT-2025-8902 · Linux+10 · Linux Kernel+10
Syzbot
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Published
2025-02-10
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Updated
2026-04-20
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CVE-2025-21790
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.14.0-rc1-syzkaller-00276-g69b54314c975
Description
A vulnerability in the Linux kernel has been identified, where the vxlan init() function fails to check the return value of vxlan vnigroup init(), potentially leading to a crash. This issue was spotted by syzbot and is characterized by a general protection fault, likely due to a non-canonical address. The vulnerability is related to a null pointer dereference in the vxlan vnigroup uninit() function.
Recommendations
For Linux kernel versions prior to 6.14.0-rc1-syzkaller-00276-g69b54314c975, consider updating to a newer version that includes the fix for this issue. As a temporary workaround, disabling the vxlan vnigroup uninit() function may help prevent the crash, but this is not a recommended long-term solution.
Exploit
Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu