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kernel: disable DirtyFrag trigger modules #59

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Merged
kvinwang merged 1 commit into from
May 8, 2026
Merged

kernel: disable DirtyFrag trigger modules #59

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12 changes: 11 additions & 1 deletion meta-dstack/recipes-kernel/linux/files/dstack-docker.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,17 @@ CONFIG_BRIDGE_VLAN_FILTERING=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_ALGO=y
CONFIG_INET_ESP=y
# Disable ESP transforms to mitigate DirtyFrag-style page-cache writes via esp4/esp6.
# Keep XFRM userspace support available for non-ESP networking features, but do
# not build the vulnerable ESP protocol handlers.
CONFIG_INET_ESP=n
CONFIG_INET6_ESP=n
CONFIG_XFRM_ESP=n

# RxRPC is not needed by dstack and is another DirtyFrag trigger path. Keep it
# disabled even if future kernel feature sets would otherwise enable it.
CONFIG_AF_RXRPC=n
CONFIG_RXKAD=n
CONFIG_NETFILTER_XT_MATCH_BPF=y
CONFIG_CRYPTO_SEQIV=y
CONFIG_IPVLAN=m
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