cve-2024-26882
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2024-08-02 00:21
Severity
Summary
net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\n\nApply the same fix than ones found in :\n\n8d975c15c0cd (\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\")\n1ca1ba465e55 (\"geneve: make sure to pull inner header in geneve_rx()\")\n\nWe have to save skb-\u003enetwork_header in a temporary variable\nin order to be able to recompute the network_header pointer\nafter a pskb_inet_may_pull() call.\n\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\n\nsyzbot reported:\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\n  dst_input include/net/dst.h:461 [inline]\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\n  tun_build_skb drivers/net/tun.c:1686 [inline]\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b"
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "title": "net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26882",
    "datePublished": "2024-04-17T10:27:38.389Z",
    "dateReserved": "2024-02-19T14:20:24.185Z",
    "dateUpdated": "2024-08-02T00:21:05.672Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26882\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:10.060\",\"lastModified\":\"2024-06-25T22:15:24.827\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\\n\\nApply the same fix than ones found in :\\n\\n8d975c15c0cd (\\\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\\\")\\n1ca1ba465e55 (\\\"geneve: make sure to pull inner header in geneve_rx()\\\")\\n\\nWe have to save skb-\u003enetwork_header in a temporary variable\\nin order to be able to recompute the network_header pointer\\nafter a pskb_inet_may_pull() call.\\n\\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\\n\\nsyzbot reported:\\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\\n  dst_input include/net/dst.h:461 [inline]\\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nUninit was created at:\\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\\n  tun_build_skb drivers/net/tun.c:1686 [inline]\\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ip_tunnel: aseg\u00farese de extraer el encabezado interno en ip_tunnel_rcv(). Aplique la misma soluci\u00f3n que las encontradas en: 8d975c15c0cd (\\\"ip6_tunnel: aseg\u00farese de extraer el encabezado interno en __ip6_tnl_rcv() \\\") 1ca1ba465e55 (\\\"geneve: aseg\u00farese de extraer el encabezado interno en geneve_rx()\\\") Tenemos que guardar skb-\u0026gt;network_header en una variable temporal para poder volver a calcular el puntero network_header despu\u00e9s de una llamada a pskb_inet_may_pull(). pskb_inet_may_pull() se asegura de que los encabezados necesarios est\u00e9n en skb-\u0026gt;head. syzbot inform\u00f3: ERROR: KMSAN: valor uninit en __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea] ERROR: KMSAN: valor uninit en INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] ERROR: KMSAN: uninit -valor en IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ERROR: KMSAN: valor uninit en ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea ] INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [en l\u00ednea] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/ 0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c: 254 dst_input include/net/dst.h:461 [en l\u00ednea] ip_rcv_finish net/ipv4/ip_input.c:449 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_rcv+0x46f/0x760 net/ipv4/ip_input .c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [en l\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 netif_receive_skb_internal net/core/dev.c:5734 [en l\u00ednea] neto /core/dev.c:5793 tun_rx_batched+0x3ee/0x980 controladores/net/tun.c:1556 tun_get_user+0x53b9/0x66e0 controladores/net/tun.c:2009 tun_chr_write_iter+0x3af/0x5d0 controladores/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs /read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf /0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit se cre\u00f3 en: __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+ 0x1be /0x1e0 mm/mempolicy.c:2204 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909 tun_build_skb drivers/net/tun.c:1686 [en l\u00ednea] tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch /x86 /entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10\",\"versionEndExcluding\":\"5.4.273\",\"matchCriteriaId\":\"4D065436-A1F0-4367-A345-B448C4CF1F74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.214\",\"matchCriteriaId\":\"65987874-467B-4D3B-91D6-68A129B34FB8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.153\",\"matchCriteriaId\":\"ACB69438-845D-4E3C-B114-3140611F9C0B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.83\",\"matchCriteriaId\":\"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.23\",\"matchCriteriaId\":\"E00814DC-0BA7-431A-9926-80FEB4A96C68\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.11\",\"matchCriteriaId\":\"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.8.2\",\"matchCriteriaId\":\"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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