Looks like this is actually a use-after-free.

ClusterFuzz has detected this issue as fixed in range 388178:388349.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6083004836872192

Fuzzer: bj_broddelwerk
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::LayoutTable::recalcChildOverflowAfterStyleChange
  blink::LayoutBlock::recalcOverflowAfterStyleChange
  blink::LayoutBlock::recalcChildOverflowAfterStyleChange
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=387601:387928
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=388178:388349

Minimized Testcase (5.47 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95hoHWi_ZjKAgUxSY0eTvhjGYch3jU5aYqumHpwZIvr7Ux1-IMIVutstCKIIBcxhwY-ZzDgLp6iMqHhUPwBE49sujgEqR4a4cgIvmFMHYvcPlvIdma0-V8lJSGKMtu2cJUeMXPzGpEAjV63wNBpJ28BeN1sMg

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot