[3.11] gh-145986: Avoid unbound C recursion in conv_content_model in pyexpat.c (CVE 2026-4224) (GH-145987)#146000
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…del` in `pyexpat.c` (CVE 2026-4224) (pythonGH-145987) Fix C stack overflow (CVE-2026-4224) when an Expat parser with a registered `ElementDeclHandler` parses inline DTD containing deeply nested content model. --------- (cherry picked from commit eb0e8be) (cherry picked from commit e5caf45) Co-authored-by: Stan Ulbrych <[email protected]> Co-authored-by: Bénédikt Tran <[email protected]>
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Ah right, I only added CVE/CWE roles in Sphinx 8.x but 3.11 uses older Sphinx. So use an inline link instead (for now the CVE is not published yet so it will be a placeholder) |
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Misc/NEWS.d/next/Security/2026-03-14-17-31-39.gh-issue-145986.ifSSr8.rst
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🤖 New build scheduled with the buildbot fleet by @StanFromIreland for commit a2f929f 🤖 Results will be shown at: https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F146000%2Fmerge If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again. |
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Fix C stack overflow (CVE-2026-4224) when an Expat parser with a registered
ElementDeclHandlerparses inline DTD containing deeply nested content model.(cherry picked from commit eb0e8be) (cherry picked from commit e5caf45)
pyexpat.c: Unbounded C recursion inconv_content_modelcauses crash (CVE 2026-4224) #145986