Refactor expression validation in nft_dynset.c#49
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Mrcopytuo wants to merge 5 commits intoQQxiaoming:mainfrom
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Refactor expression validation in nft_dynset.c#49Mrcopytuo wants to merge 5 commits intoQQxiaoming:mainfrom
Mrcopytuo wants to merge 5 commits intoQQxiaoming:mainfrom
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Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 7 to 8. - [Release notes](https://github.com/dawidd6/action-download-artifact/releases) - [Commits](dawidd6/action-download-artifact@v7...v8) --- updated-dependencies: - dependency-name: dawidd6/action-download-artifact dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>
…tions/dawidd6/action-download-artifact-8
Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 8 to 9. - [Release notes](https://github.com/dawidd6/action-download-artifact/releases) - [Commits](dawidd6/action-download-artifact@v8...v9) --- updated-dependencies: - dependency-name: dawidd6/action-download-artifact dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>
…tions/dawidd6/action-download-artifact-9
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Background
Linux kernel’s netfilter nftables subsystem had a null pointer dereference vulnerability in
nft_dynset_init()innet/netfilter/nft_dynset.cthat could be triggered when dynset expressions provided by userspace did not match the corresponding set expression parameters. This may allow a local attacker withCAP_NET_ADMINprivileges to cause a denial-of-service (kernel crash). This is tracked as CVE-2023-6622.Change Summary
net/netfilter/nft_dynset.c, add explicit checks to ensure that when dynset expression lengths differ from set expression lengths, the logic bails out early with an error (-EINVAL), avoiding use of mismatched pointers.References
3701cd390fd731ee7ae8b8006246c8db82c72bea