USN-7191-1

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. (CVE-2025-0237, CVE-2025-0239, CVE-2025-0240, CVE-2025-0242, CVE-2025-0243, CVE-2025-0247)

Irvan Kurniawan discovered that Firefox incorrectly handled memory when breaking lines in text, leading to a use-after-free vulnerability. An attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2025-0238)

Nils Bars discovered that Firefox incorrectly handled memory when using JavaScript Text Segmentation. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-0241)

References

Affected packages

Ubuntu:20.04:LTS / firefox

Package

Name: firefox
Purl: pkg:deb/ubuntu/firefox@134.0+build1-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

134.0+build1-0ubuntu0.20.04.1

Affected versions

69.*

69.0.3+build1-0ubuntu1

70.*

70.0+build2-0ubuntu1

70.0+build2-0ubuntu2

70.0.1+build1-0ubuntu2

71.*

71.0+build2-0ubuntu2

71.0+build5-0ubuntu1

72.*

72.0.1+build1-0ubuntu1

72.0.2+build1-0ubuntu1

73.*

73.0+build1-0ubuntu1

73.0+build2-0ubuntu1

73.0+build3-0ubuntu1

73.0.1+build1-0ubuntu1

74.*

74.0+build1-0ubuntu1

74.0+build2-0ubuntu1

74.0+build2-0ubuntu2

74.0+build3-0ubuntu1

75.*

75.0+build3-0ubuntu1

76.*

76.0+build2-0ubuntu0.20.04.1

76.0.1+build1-0ubuntu0.20.04.1

77.*

77.0.1+build1-0ubuntu0.20.04.1

78.*

78.0.1+build1-0ubuntu0.20.04.1

78.0.2+build2-0ubuntu0.20.04.1

79.*

79.0+build1-0ubuntu0.20.04.1

80.*

80.0+build2-0ubuntu0.20.04.1

80.0.1+build1-0ubuntu0.20.04.1

81.*

81.0+build2-0ubuntu0.20.04.1

81.0.2+build1-0ubuntu0.20.04.1

82.*

82.0+build2-0ubuntu0.20.04.1

82.0.2+build1-0ubuntu0.20.04.1

82.0.3+build1-0ubuntu0.20.04.1

83.*

83.0+build2-0ubuntu0.20.04.1

84.*

84.0+build3-0ubuntu0.20.04.1

84.0.1+build1-0ubuntu0.20.04.1

84.0.2+build1-0ubuntu0.20.04.1

85.*

85.0+build1-0ubuntu0.20.04.1

85.0.1+build1-0ubuntu0.20.04.1

86.*

86.0+build3-0ubuntu0.20.04.1

86.0.1+build1-0ubuntu0.20.04.1

87.*

87.0+build3-0ubuntu0.20.04.2

88.*

88.0+build2-0ubuntu0.20.04.1

88.0.1+build1-0ubuntu0.20.04.2

89.*

89.0+build2-0ubuntu0.20.04.2

89.0.1+build1-0ubuntu0.20.04.1

89.0.2+build1-0ubuntu0.20.04.1

90.*

90.0+build1-0ubuntu0.20.04.1

90.0.2+build1-0ubuntu0.20.04.1

91.*

91.0+build2-0ubuntu0.20.04.1

91.0.1+build1-0ubuntu0.20.04.1

91.0.2+build1-0ubuntu0.20.04.1

92.*

92.0+build3-0ubuntu0.20.04.1

93.*

93.0+build1-0ubuntu0.20.04.1

94.*

94.0+build3-0ubuntu0.20.04.1

95.*

95.0+build1-0ubuntu0.20.04.1

95.0.1+build2-0ubuntu0.20.04.1

96.*

96.0+build2-0ubuntu0.20.04.1

97.*

97.0+build2-0ubuntu0.20.04.1

97.0.2+build1-0ubuntu0.20.04.1

98.*

98.0+build3-0ubuntu0.20.04.2

98.0.1+build2-0ubuntu0.20.04.1

98.0.2+build1-0ubuntu0.20.04.1

99.*

99.0+build2-0ubuntu0.20.04.2

100.*

100.0+build2-0ubuntu0.20.04.1

100.0.2+build1-0ubuntu0.20.04.1

101.*

101.0.1+build1-0ubuntu0.20.04.1

102.*

102.0+build2-0ubuntu0.20.04.1

103.*

103.0+build1-0ubuntu0.20.04.1

104.*

104.0+build3-0ubuntu0.20.04.1

105.*

105.0+build2-0ubuntu0.20.04.1

106.*

106.0.2+build1-0ubuntu0.20.04.1

106.0.5+build1-0ubuntu0.20.04.1

107.*

107.0+build2-0ubuntu0.20.04.1

108.*

108.0+build2-0ubuntu0.20.04.1

108.0.1+build1-0ubuntu0.20.04.1

108.0.2+build1-0ubuntu0.20.04.1

109.*

109.0+build2-0ubuntu0.20.04.1

109.0.1+build1-0ubuntu0.20.04.2

110.*

110.0+build3-0ubuntu0.20.04.1

110.0.1+build2-0ubuntu0.20.04.1

111.*

111.0+build2-0ubuntu0.20.04.1

111.0.1+build2-0ubuntu0.20.04.1

112.*

112.0+build2-0ubuntu0.20.04.1

112.0.1+build1-0ubuntu0.20.04.1

112.0.2+build1-0ubuntu0.20.04.1

113.*

113.0+build2-0ubuntu0.20.04.1

113.0.1+build1-0ubuntu0.20.04.1

113.0.2+build1-0ubuntu0.20.04.1

114.*

114.0+build3-0ubuntu0.20.04.1

114.0.1+build1-0ubuntu0.20.04.1

114.0.2+build1-0ubuntu0.20.04.1

115.*

115.0+build2-0ubuntu0.20.04.3

115.0.2+build1-0ubuntu0.20.04.1

116.*

116.0+build2-0ubuntu0.20.04.2

116.0.2+build1-0ubuntu0.20.04.1

116.0.3+build2-0ubuntu0.20.04.1

117.*

117.0+build2-0ubuntu0.20.04.1

117.0.1+build2-0ubuntu0.20.04.1

118.*

118.0.1+build1-0ubuntu0.20.04.1

118.0.2+build2-0ubuntu0.20.04.1

119.*

119.0+build2-0ubuntu0.20.04.1

119.0.1+build1-0ubuntu0.20.04.1

120.*

120.0+build2-0ubuntu0.20.04.1

120.0.1+build1-0ubuntu0.20.04.1

121.*

121.0+build1-0ubuntu0.20.04.1

121.0.1+build1-0ubuntu0.20.04.1

122.*

122.0+build2-0ubuntu0.20.04.1

122.0.1+build1-0ubuntu0.20.04.1

123.*

123.0+build3-0ubuntu0.20.04.1

123.0.1+build1-0ubuntu0.20.04.1

124.*

124.0+build1-0ubuntu0.20.04.1

124.0.1+build1-0ubuntu0.20.04.1

124.0.2+build1-0ubuntu0.20.04.1

125.*

125.0.2+build1-0ubuntu0.20.04.2

125.0.3+build1-0ubuntu0.20.04.1

126.*

126.0+build2-0ubuntu0.20.04.1

126.0.1+build1-0ubuntu0.20.04.1

127.*

127.0.2+build1-0ubuntu0.20.04.1

128.*

128.0+build2-0ubuntu0.20.04.1

129.*

129.0.1+build1-0ubuntu0.20.04.1

129.0.2+build1-0ubuntu0.20.04.1

130.*

130.0+build2-0ubuntu0.20.04.1

130.0.1+build1-0ubuntu0.20.04.1

131.*

131.0+build1.1-0ubuntu0.20.04.1

131.0.2+build1-0ubuntu0.20.04.1

131.0.3+build1-0ubuntu0.20.04.1

132.*

132.0+build1-0ubuntu0.20.04.1

133.*

133.0+build2-0ubuntu0.20.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "134.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "134.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-dev"
        },
        {
            "binary_version": "134.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-geckodriver"
        },
        {
            "binary_version": "134.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-mozsymbols"
        }
    ],
    "availability": "No subscription required"
}