Coverity Scan: Firefox
| Project Name | Firefox |
|---|---|
| Lines of code analyzed | 10,075,310 |
| On Coverity Scan since | Feb 22, 2006 |
| Last build analyzed | about 6 hours ago |
| Language | C/C++ |
| Repository URL | https://hg.mozilla.org/mozilla-central |
| Homepage URL | https://www.mozilla.org |
| License | MPL (Mozilla Public License ) |
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Version: Version
- Mar 22, 2026
- Last Analyzed
- 10,075,310
- Lines of Code Analyzed
- 9,042,207
- Lines of Code in Selected Components
- 0.50
- Defect Density
Defect changes since previous build dated Mar 21, 2026
- 1
- Newly detected
- 2
- Eliminated
Defects by status for current build
- 49,845
- Total defects
- 4,527
- Outstanding
- 43,971
- Fixed
See how defect density for 'Firefox' compares with defect density for other open source projects. Learn more
Note: Defect density is measured by the number of defects per 1,000 lines of code.
Analysis Metrics per Components
| Component Name | Pattern | Ignore | Line of Code | Defect density |
|---|---|---|---|---|
| layout | /layout/.* | No | 259,922 | 0.41 |
| xpcom | /xpcom/.* | No | 80,027 | 0.50 |
| dom-indexedDB | /dom/indexedDB/.* | No | 31,716 | 0.38 |
| dom-workers | /dom/workers/.* | No | 22,186 | 0.72 |
| PSM | /security/manager/.* | No | 27,458 | 1.46 |
| image | /image/.* | No | 34,462 | 0.41 |
| nsprpub | /nsprpub/.* | No | 34,964 | 1.74 |
| parser | /parser/.* | No | 52,966 | 0.26 |
| security | /security/.* | No | 360,041 | 0.78 |
| storage | /storage/.* | No | 9,282 | 0.11 |
| docshell | /docshell/.* | No | 27,017 | 0.81 |
| editor | /editor/.* | No | 85,160 | 0.21 |
| accessible | /accessible/.* | No | 46,432 | 0.24 |
| extensions | /extensions/.* | No | 24,218 | 0.91 |
| memory | /memory/.* | No | 10,376 | 2.60 |
| brotli | /modules/brotli/.* | No | 33,348 | 1.11 |
| libmar | /modules/libmar/.* | No | 2,942 | 4.42 |
| modules | /modules/.* | No | 36,328 | 0.61 |
| toolkit | /toolkit/.* | No | 324,424 | 0.62 |
| widget | /widget/.* | No | 79,452 | 0.37 |
| xpfe | /xpfe/.* | No | 4,814 | 0.00 |
| generated-test-files | .*/dom/bindings/Test*.cpp | No | 209,366 | 0.08 |
| dom-canvas | /dom/canvas/.* | No | 53,556 | 0.65 |
| IPC-dom-plugin | /dom/plugins/ipc/.* | No | 0 | N/A |
| dom-plugins | /dom/plugins/.* | No | 0 | N/A |
| dom-html | /dom/html/.* | No | 34,276 | 0.93 |
| dom-xslt | /dom/xslt/.* | No | 18,425 | 1.41 |
| dom-media | /dom/media/.* | No | 297,996 | 0.98 |
| dom-promise | /dom/promise/.* | No | 1,297 | 2.31 |
| dom-svg | /dom/svg/.* | No | 26,010 | 1.00 |
| dom-crypto | /dom/crypto/.* | No | 4,480 | 0.00 |
| dom-xbl | /dom/xbl/.* | No | 0 | N/A |
| IPC-dom | /dom/ipc/.* | No | 33,016 | 0.48 |
| content | /(content|dom)/.* | No | 443,552 | 0.48 |
| JavaScript-jit | /js/src/jit/.* | No | 207,423 | 0.23 |
| JavaScript-asmjs | /js/src/asmjs/.* | No | 0 | N/A |
| JavaScript-xpconnect | /js/xpconnect/.* | No | 29,362 | 0.58 |
| JavaScript-ctypes | /js/src/ctypes/.* | No | 13,011 | 1.00 |
| JavaScript-frontend | /js/src/frontend/.* | No | 56,348 | 0.43 |
| JavaScript-jsapi-tests | /js/src/jsapi-tests/.* | Yes | 0 | N/A |
| JavaScript-proxy | /js/src/proxy/.* | No | 3,632 | 0.28 |
| JavaScript-shell | /js/src/shell/.* | No | 0 | N/A |
| JavaScript-vm | /js/src/vm/.* | No | 111,655 | 0.42 |
| IPC-js | /js/ipc/.* | No | 0 | N/A |
| JavaScript | /js/.* | No | 333,622 | 0.34 |
| gfx-cairo | /gfx/cairo/.* | Yes | 127,680 | N/A |
| skia | /gfx/skia/skia/.* | Yes | 196,512 | N/A |
| gfx-gl | /gfx/gl/.* | No | 24,649 | 0.32 |
| gfx-graphite2 | /gfx/graphite2/.* | No | 12,219 | 1.31 |
| IPC-gfx-layers | /gfx/layers/ipc/.* | No | 11,729 | 0.94 |
| gfx-layers | /gfx/layers/.* | No | 53,158 | 0.66 |
| gfx-thebes | /gfx/thebes/.* | No | 53,266 | 0.83 |
| gfx | /gfx/.* | No | 344,774 | 0.97 |
| network-cache | /netwerk/cache/.* | No | 0 | N/A |
| network-cache2 | /netwerk/cache2/.* | No | 20,540 | 0.54 |
| network-dns | /netwerk/dns/.* | No | 12,558 | 0.24 |
| network-websocket | /netwerk/protocol/websocket/.* | No | 6,583 | 0.61 |
| network-http | /netwerk/protocol/http/.* | No | 78,809 | 0.46 |
| IPC-netwerk | /netwerk/ipc/.* | No | 7,910 | 0.63 |
| netwerk-srtp | /netwerk/srtp/.* | No | 0 | N/A |
| network-sctp | /netwerk/sctp/.* | No | 76,447 | 2.03 |
| network | /netwerk/.* | No | 76,913 | 0.33 |
| media-libjpeg | /media/libjpeg/.* | No | 27,692 | 0.94 |
| media-libstagefright | /media/libstagefright/.* | No | 0 | N/A |
| media-libvorbis | /media/libvorbis/.* | No | 49,853 | 0.14 |
| media-mtransport | /media/mtransport/.* | No | 0 | N/A |
| media-libvpx | /media/libvpx/.* | Yes | 125,519 | N/A |
| intl-icu | /intl/icu/.* | Yes | 243,755 | N/A |
| aom-thirdparty | /third_party/aom/.* | Yes | 282,226 | N/A |
| media-libopus | /media/libopus/.* | Yes | 41,938 | N/A |
| media-webrtc | /media/webrtc/.* | Yes | 0 | N/A |
| sqlite-thirdparty | /db/sqlite3/.* | Yes | 0 | N/A |
| media-mtransport-thirdparty | /media/mtransport/third_party/.* | Yes | 0 | N/A |
| media | /media/.* | No | 259,234 | 0.34 |
| intl | /intl/.* | No | 20,694 | 0.10 |
| IPC-chromium | /ipc/chromium/.* | No | 42,767 | 0.80 |
| IPC-glue | /ipc/glue/.* | No | 17,263 | 0.46 |
| IPC | .*/ipc/.* | No | 568,403 | 0.68 |
| tools-profiler | /tools/profiler/.* | No | 24,139 | 1.24 |
| uriloader | /uriloader/.* | No | 10,645 | 0.19 |
| view | /view/.* | No | 0 | N/A |
| caps | /caps/.* | No | 5,572 | 0.00 |
| hal | /hal/.* | No | 1,384 | 1.45 |
| embedding | /embedding/.* | No | 0 | N/A |
| testing | /testing/.* | No | 1,400 | 3.57 |
| headers | /obj-x86_64-pc-linux-gnu/dist/include/.* | No | 912,550 | 0.45 |
| build-time | /obj-x86_64-pc-linux-gnu/.* | No | 1,507,218 | 0.09 |
| hunspell | /extensions/spellcheck/hunspell/.* | No | 0 | N/A |
| google-breakpad | /toolkit/crashreporter/google-breakpad/.* | No | 0 | N/A |
| protocol-buffer | /toolkit/components/protobuf/src/google/protobuf/.* | No | 0 | N/A |
| devtools | /devtools/.* | No | 6,214 | 0.16 |
| webapprt | /webapprt/.* | No | 0 | N/A |
| build-unix | /build/unix/.* | No | 521 | 11.52 |
| browser | /browser/.* | No | 1,956 | 2.56 |
| config | /config/.* | No | 529 | 9.45 |
| tools | /tools/.* | No | 1,144 | 4.37 |
| mfbt | /mfbt/tests/.* | Yes | 15,473 | N/A |
| NSS | /security/nss/.* | Yes | 0 | N/A |
| system-header | /usr/include/.* | Yes | 0 | N/A |
| snappy | /other-licenses/snappy/.* | No | 2,626 | 0.76 |
| rdf | /rdf/.* | No | 0 | N/A |
| configure-gen | .*conftest\..*.cpp | Yes | 0 | N/A |
| jpeg-xl | /third_party/jpeg-xl/.* | No | 0 | N/A |
| libwebrtc | /third_parth/libwebrtc/.* | No | 0 | N/A |
| dav1d | /third_parth/dav1d/.* | No | 0 | N/A |
| lz4 | /mfbt/lz4/.* | No | 0 | N/A |
| mozglue | /mozglue/.* | No | 37,766 | 0.50 |
| glslopt | /third_party/rust/glslopt/.* | No | 111,014 | 0.53 |
| sqlite3 | /third_party/sqlite3/.* | No | 198,310 | 0.35 |
| wayland-proxy | /third_party/wayland-proxy/.* | No | 874 | 8.01 |
| zstd | /third_party/zstd/.* | No | 12,394 | 0.56 |
| lmdb-rkv-sys | /third_party/rust/lmdb-rkv-sys/.* | No | 0 | N/A |
| chrome | /chrome/.* | No | 1,291 | 0.00 |
| startupcache | /startupcache/.* | No | 967 | 1.03 |
| Other | .* | No | 977,632 | 0.67 |
CWE Top 25 defects
| ID | CWE-Name | Number of Defects |
|---|---|---|
| 120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | 13 |
| 131 | Incorrect Calculation of Buffer Size | 9 |
| 190 | Integer Overflow or Wraparound | 342 |
| 676 | Use of Potentially Dangerous Function | 28 |
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