cve-2024-26910
Vulnerability from cvelistv5
Published
2024-04-17 15:59
Modified
2024-12-19 08:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix performance regression in swap operation The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead. Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747ebPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747ebPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Impacted products
Vendor Product Version
Linux Linux Version: 427deb5ba5661c4ae1cfb35955d2e01bd5f3090a
Version: e7152a138a5ac77439ff4e7a7533448a7d4c260d
Version: 8bb930c3a1eacec1b14817f565ff81667c7c5dfa
Version: 875ee3a09e27b7adb7006ca6d16faf7f33415aa5
Version: 23c31036f862582f98386120aee55c9ae23d7899
Version: 28628fa952fefc7f2072ce6e8016968cc452b1ba
Version: 28628fa952fefc7f2072ce6e8016968cc452b1ba
 Create a notification for this product.
   Linux Linux Version: 6.7
 Create a notification for this product.
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\"net/netfilter/ipset/ip_set_hash_gen.h\", \"net/netfilter/ipset/ip_set_list_set.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.210\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.79\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.18\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/linux/netfilter/ipset/ip_set.h\", \"net/netfilter/ipset/ip_set_bitmap_gen.h\", \"net/netfilter/ipset/ip_set_core.c\", \"net/netfilter/ipset/ip_set_hash_gen.h\", \"net/netfilter/ipset/ip_set_list_set.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225\"}, {\"url\": \"https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05\"}, {\"url\": \"https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49\"}, {\"url\": \"https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161c\"}, {\"url\": \"https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397\"}, {\"url\": \"https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747eb\"}, {\"url\": \"https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001\"}], \"x_generator\": {\"engine\": \"bippy-9e1c9544281a\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: ipset: fix performance regression in swap operation\\n\\nThe patch \\\"netfilter: ipset: fix race condition between swap/destroy\\nand kernel side add/del/test\\\", commit 28628fa9 fixes a race condition.\\nBut the synchronize_rcu() added to the swap function unnecessarily slows\\nit down: it can safely be moved to destroy and use call_rcu() instead.\\n\\nEric Dumazet pointed out that simply calling the destroy functions as\\nrcu callback does not work: sets with timeout use garbage collectors\\nwhich need cancelling at destroy which can wait. Therefore the destroy\\nfunctions are split into two: cancelling garbage collectors safely at\\nexecuting the command received by netlink and moving the remaining\\npart only into the rcu callback.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-05T09:18:00.980Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26910\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-05T09:18:00.980Z\", \"dateReserved\": \"2024-02-19T14:20:24.188Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T15:59:21.967Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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