cve-2024-35888
Vulnerability from cvelistv5
Published
2024-05-19 08:34
Modified
2024-08-02 03:21
Severity
Summary
erspan: make sure erspan_base_hdr is present in skb->head
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06a939f72a24a7d8251f84cf4c042df86c6666ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ac328a5a4138a6c03dfc3f46017bd5c19167446
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17af420545a750f763025149fa7b833a4fc8b8f0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1db7fcb2b290c47c202b79528824f119fa28937d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e3fdeecec5707678b0d1f18c259dadb97262e9d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b14b9f9503ec823ca75be766dcaeff4f0bfeca85
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e54a0c79cdc2548729dd7e2e468b08c5af4d0df5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee0088101beee10fa809716d6245d915b09c37c7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerspan: make sure erspan_base_hdr is present in skb-\u003ehead\n\nsyzbot reported a problem in ip6erspan_rcv() [1]\n\nIssue is that ip6erspan_rcv() (and erspan_rcv()) no longer make\nsure erspan_base_hdr is present in skb linear part (skb-\u003ehead)\nbefore getting @ver field from it.\n\nAdd the missing pskb_may_pull() calls.\n\nv2: Reload iph pointer in erspan_rcv() after pskb_may_pull()\n    because skb-\u003ehead might have changed.\n\n[1]\n\n BUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2742 [inline]\n BUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2756 [inline]\n BUG: KMSAN: uninit-value in ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline]\n BUG: KMSAN: uninit-value in gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610\n  pskb_may_pull_reason include/linux/skbuff.h:2742 [inline]\n  pskb_may_pull include/linux/skbuff.h:2756 [inline]\n  ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline]\n  gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610\n  ip6_protocol_deliver_rcu+0x1d4c/0x2ca0 net/ipv6/ip6_input.c:438\n  ip6_input_finish net/ipv6/ip6_input.c:483 [inline]\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492\n  ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586\n  dst_input include/net/dst.h:460 [inline]\n  ip6_rcv_finish+0x955/0x970 net/ipv6/ip6_input.c:79\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ipv6_rcv+0xde/0x390 net/ipv6/ip6_input.c:310\n  __netif_receive_skb_one_core net/core/dev.c:5538 [inline]\n  __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5652\n  netif_receive_skb_internal net/core/dev.c:5738 [inline]\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5798\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1549\n  tun_get_user+0x5566/0x69e0 drivers/net/tun.c:2002\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n  call_write_iter include/linux/fs.h:2108 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:3804 [inline]\n  slab_alloc_node mm/slub.c:3845 [inline]\n  kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:577\n  __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668\n  alloc_skb include/linux/skbuff.h:1318 [inline]\n  alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504\n  sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795\n  tun_alloc_skb drivers/net/tun.c:1525 [inline]\n  tun_get_user+0x209a/0x69e0 drivers/net/tun.c:1846\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n  call_write_iter include/linux/fs.h:2108 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nCPU: 1 PID: 5045 Comm: syz-executor114 Not tainted 6.9.0-rc1-syzkaller-00021-g962490525cff #0"
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      "title": "erspan: make sure erspan_base_hdr is present in skb-\u003ehead",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-35888",
    "datePublished": "2024-05-19T08:34:44.428Z",
    "dateReserved": "2024-05-17T13:50:33.113Z",
    "dateUpdated": "2024-08-02T03:21:48.504Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35888\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-19T09:15:09.910\",\"lastModified\":\"2024-06-27T12:15:25.870\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerspan: make sure erspan_base_hdr is present in skb-\u003ehead\\n\\nsyzbot reported a problem in ip6erspan_rcv() [1]\\n\\nIssue is that ip6erspan_rcv() (and erspan_rcv()) no longer make\\nsure erspan_base_hdr is present in skb linear part (skb-\u003ehead)\\nbefore getting @ver field from it.\\n\\nAdd the missing pskb_may_pull() calls.\\n\\nv2: Reload iph pointer in erspan_rcv() after pskb_may_pull()\\n    because skb-\u003ehead might have changed.\\n\\n[1]\\n\\n BUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2742 [inline]\\n BUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2756 [inline]\\n BUG: KMSAN: uninit-value in ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline]\\n BUG: KMSAN: uninit-value in gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610\\n  pskb_may_pull_reason include/linux/skbuff.h:2742 [inline]\\n  pskb_may_pull include/linux/skbuff.h:2756 [inline]\\n  ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline]\\n  gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610\\n  ip6_protocol_deliver_rcu+0x1d4c/0x2ca0 net/ipv6/ip6_input.c:438\\n  ip6_input_finish net/ipv6/ip6_input.c:483 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492\\n  ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586\\n  dst_input include/net/dst.h:460 [inline]\\n  ip6_rcv_finish+0x955/0x970 net/ipv6/ip6_input.c:79\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ipv6_rcv+0xde/0x390 net/ipv6/ip6_input.c:310\\n  __netif_receive_skb_one_core net/core/dev.c:5538 [inline]\\n  __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5652\\n  netif_receive_skb_internal net/core/dev.c:5738 [inline]\\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5798\\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1549\\n  tun_get_user+0x5566/0x69e0 drivers/net/tun.c:2002\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\\n  call_write_iter include/linux/fs.h:2108 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:3804 [inline]\\n  slab_alloc_node mm/slub.c:3845 [inline]\\n  kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:577\\n  __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668\\n  alloc_skb include/linux/skbuff.h:1318 [inline]\\n  alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504\\n  sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795\\n  tun_alloc_skb drivers/net/tun.c:1525 [inline]\\n  tun_get_user+0x209a/0x69e0 drivers/net/tun.c:1846\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\\n  call_write_iter include/linux/fs.h:2108 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nCPU: 1 PID: 5045 Comm: syz-executor114 Not tainted 6.9.0-rc1-syzkaller-00021-g962490525cff #0\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: erspan: aseg\u00farese de que erspan_base_hdr est\u00e9 presente en skb-\u0026gt;head syzbot inform\u00f3 un problema en ip6erspan_rcv() [1] El problema es que ip6erspan_rcv() (y erspan_rcv()) ya no funcionan aseg\u00farese de que erspan_base_hdr est\u00e9 presente en la parte lineal de skb (skb-\u0026gt;head) antes de obtener el campo @ver. Agregue las llamadas pskb_may_pull() que faltan. v2: Vuelva a cargar el puntero iph en erspan_rcv() despu\u00e9s de pskb_may_pull() porque skb-\u0026gt;head podr\u00eda haber cambiado. [1] ERROR: KMSAN: valor uninit en pskb_may_pull_reason include/linux/skbuff.h:2742 [en l\u00ednea] ERROR: KMSAN: valor uninit en pskb_may_pull include/linux/skbuff.h:2756 [en l\u00ednea] ERROR: KMSAN: uninit -valor en ip6erspan_rcv net/ipv6/ip6_gre.c:541 [en l\u00ednea] ERROR: KMSAN: valor uninit en gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610 pskb_may_pull_reason include/linux/skbuff.h:2742 [en l\u00ednea ] PSKB_MAY_PULL incluye/linux/skbuff.h: 2756 [en l\u00ednea] ip6erspan_rcv net/ipv6/ip6_gre.c: 541 [inline] gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c: 610 ip6_protocol_reLiver+0x1d4cu 6/ ip6_input.c:438 ip6_input_finish net/ipv6/ip6_input.c:483 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492 ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586 dst_input include/net/dst.h:460 [en l\u00ednea] ip6_rcv_finish+0x955/0x970 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ipv6_rcv +0xde/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5538 [en l\u00ednea] __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5652 netif_receive_skb_internal net/core/dev.c:5738 [en l\u00ednea] netif_receive_skb+0x58/0x660 net/core/dev.c:5798 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1549 tun_get_user+0x5566/0x69e0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2108 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652 do_syscall_64+0xd5/0x1f0 entrada_SYSCALL_64 _despu\u00e9s_hwframe+0x6d/ 0x75 Uninit was created at: slab_post_alloc_hook mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff .c:577 __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1318 [en l\u00ednea] alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504 sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795 tun_alloc_skb drivers/net/tun.c:1525 [en l\u00ednea] tun_get_user+0x209a/0x69e0 drivers/net/tun.c:1846 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2108 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb63/0x1520 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+0x93/0xe0 fs/read_write.c:652 do_syscall_64+0xd5/0x1f0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 CPU: 1 Comunicaci\u00f3n 5045: syz-executor114 No contaminado 6.9.0-rc1-syzkaller-00021-g962490525cff #0\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06a939f72a24a7d8251f84cf4c042df86c6666ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0ac328a5a4138a6c03dfc3f46017bd5c19167446\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/17af420545a750f763025149fa7b833a4fc8b8f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1db7fcb2b290c47c202b79528824f119fa28937d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4e3fdeecec5707678b0d1f18c259dadb97262e9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b14b9f9503ec823ca75be766dcaeff4f0bfeca85\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e54a0c79cdc2548729dd7e2e468b08c5af4d0df5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee0088101beee10fa809716d6245d915b09c37c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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