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Description: io_uring: disable polling pollfree files
References:
Notes:
carnil> Introduced by 221c5eb233823 ("io_uring: add support for
carnil> IORING_OP_POLL") 5.1-rc1.
carnil> We need to investigate how this was fixed in mainline through
carnil> refactorings likely?
carnil> Consider it as fixed with 791f3465c4af ("io_uring: fix UAF due
carnil> to missing POLLFREE handling") in 5.17-rc1.
Bugs:
upstream: released (5.17-rc1) [791f3465c4afde02d7f16cf7424ca87070b69396]
5.10-upstream-stable: released (5.10.141) [28d8d2737e82fc29ff9e788597661abecc7f7994]
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (5.17.3-1)
5.10-bullseye-security: released (5.10.148-1)
4.19-buster-security: N/A "Vulnerable code not present"
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