CVE-2025-39967

{"id": "CVE-2025-39967", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-10-15T08:15:34.210", "references": [{"url": "https://git.kernel.org/stable/c/1a194e6c8e1ee745e914b0b7f50fa86c89ed13fe", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4a4bac869560f943edbe3c2b032062f6673b13d3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/994bdc2d23c79087fbf7dcd9544454e8ebcef877", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9c8ec14075c5317edd6b242f1be8167aa1e4e333", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a6eb9f423b3db000aaedf83367b8539f6b72dcfc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/adac90bb1aaf45ca66f9db8ac100be16750ace78", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b8a6e85328aeb9881531dbe89bcd2637a06c3c95", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c0c01f9aa08c8e10e10e8c9ebb5be01a4eff6eb7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: fix integer overflow in fbcon_do_set_font\n\nFix integer overflow vulnerabilities in fbcon_do_set_font() where font\nsize calculations could overflow when handling user-controlled font\nparameters.\n\nThe vulnerabilities occur when:\n1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount\n multiplication with user-controlled values that can overflow.\n2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow\n3. This results in smaller allocations than expected, leading to buffer\n overflows during font data copying.\n\nAdd explicit overflow checking using check_mul_overflow() and\ncheck_add_overflow() kernel helpers to safety validate all size\ncalculations before allocation."}], "lastModified": "2026-02-03T14:12:31.527", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0568BD06-B895-4C33-AE96-F6EA22C7AF67", "versionEndExcluding": "4.5", "versionStartIncluding": "4.4.235"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C5731018-BC4A-4EEC-BFBF-32326F4503AC", "versionEndExcluding": "4.10", "versionStartIncluding": "4.9.235"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6F6C149F-DB67-4E39-BD45-60423EB9A32B", "versionEndExcluding": "4.15", "versionStartIncluding": "4.14.196"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D61C332-812B-4401-91E4-FD9D81035869", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.143"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5314A270-4CEE-40C7-AA4C-6D63177748EE", "versionEndExcluding": "5.4.300", "versionStartIncluding": "5.4.62"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D1A2FB6C-A45E-4E1B-8FE3-D0CDD7BE36C3", "versionEndExcluding": "5.9", "versionStartIncluding": "5.8.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "079A3366-91A4-4FB6-93DE-AC6F191C2564", "versionEndExcluding": "5.10.245", "versionStartIncluding": "5.9.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CF862263-DC8D-4324-A52A-DA1D7880B35A", "versionEndExcluding": "5.15.194", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F31BA8D-2902-46DD-98AF-62DC2E0B2965", "versionEndExcluding": "6.1.155", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "027853C1-2263-44B9-99B5-D9FCA8FB92EB", "versionEndExcluding": "6.6.109", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "03EA453B-67BD-46D8-9AB0-39D8325C5B4D", "versionEndExcluding": "6.12.50", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AE7824F-9555-4B3E-B0F8-C9E279E8B81A", "versionEndExcluding": "6.16.10", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F79A2EB6-623E-4749-AEE0-DCB58C4C42F8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A52A4ABE-5C24-4CD4-A348-E303B7F23C71"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12019CF2-FD8E-4D59-BA4C-7093DF0BB091"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9B1AB90E-C0C6-4027-B27D-BA214BE33561"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "103FE5BA-7315-4263-9C95-EABEAD7E174F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47E31D6A-31EC-4F63-9CAE-B7A52B58E149"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3497462B-A3DA-47CC-A5DD-C1C2D2E6DFDE"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A4516A6-C12E-42A4-8C0E-68AEF3264504"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3963C3A0-CEA1-4F5C-8011-3A593ABB684D"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}