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Affected Component
Analysis
gnupg
Exploitable
Name
CVE-2025-30258
Description
In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
2.7
CVSSv31
4.7
CVSSv31
NaN
other
Others affected components#
Name
Project
Project Version
Version
Status
buildroot
master
1.4.23
Exploitable
buildroot
master
2.5.20
Not Affected
openwrt
master
1.4.23-r5
Exploitable
openwrt
master
2.5.20-r1
Not Affected
openwrt
openwrt-25.12
1.4.23-r5
Exploitable
openwrt
openwrt-25.12
2.4.8-r1
Not Affected
yocto
kirkstone
2.3.7
Patched
yocto
master
2.5.17
Not Affected
yocto
scarthgap
2.4.9
Not Affected
Resolved with patches#
gnupg (yocto:kirkstone)
#
Title
Author
Resolve
1
gpg: Fix a verification DoS due to a malicious subkey in the
Yogita Urade <yogita.urade@windriver.com>
CVE-2025-30258
2
gpg: Fix double free of internal data.
Werner Koch <wk@gnupg.org>
CVE-2025-30258
3
gpg: Remove a signature check function wrapper.
Werner Koch <wk@gnupg.org>
CVE-2025-30258
4
gpg: Fix regression for the recent malicious subkey DoS fix.
Werner Koch <wk@gnupg.org>
CVE-2025-30258
5
gpg: Lookup key for merging/inserting only by primary key.
Werner Koch <wk@gnupg.org>
CVE-2025-30258