Vulnerability-Lookup

CVE-2024-35893 (GCVE-0-2024-35893)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2026-05-12 11:52

Title

net/sched: act_skbmod: prevent kernel-infoleak

Summary

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_skbmod: prevent kernel-infoleak syzbot found that tcf_skbmod_dump() was copying four bytes from kernel stack to user space [1]. The issue here is that 'struct tc_skbmod' has a four bytes hole. We need to clear the structure before filling fields. [1] BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 copy_to_iter include/linux/uio.h:196 [inline] simple_copy_to_iter net/core/datagram.c:532 [inline] __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546 skb_copy_datagram_msg include/linux/skbuff.h:4050 [inline] netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x2c4/0x340 net/socket.c:1068 __sys_recvfrom+0x35a/0x5f0 net/socket.c:2242 __do_sys_recvfrom net/socket.c:2260 [inline] __se_sys_recvfrom net/socket.c:2256 [inline] __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2256 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was stored to memory at: pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253 netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1317 netlink_unicast+0x9f/0x1260 net/netlink/af_netlink.c:1351 nlmsg_unicast include/net/netlink.h:1144 [inline] nlmsg_notify+0x21d/0x2f0 net/netlink/af_netlink.c:2610 rtnetlink_send+0x73/0x90 net/core/rtnetlink.c:741 rtnetlink_maybe_send include/linux/rtnetlink.h:17 [inline] tcf_add_notify net/sched/act_api.c:2048 [inline] tcf_action_add net/sched/act_api.c:2071 [inline] tc_ctl_action+0x146e/0x19d0 net/sched/act_api.c:2119 rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2559 rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6613 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0xf4c/0x1260 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x10df/0x11f0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was stored to memory at: __nla_put lib/nlattr.c:1041 [inline] nla_put+0x1c6/0x230 lib/nlattr.c:1099 tcf_skbmod_dump+0x23f/0xc20 net/sched/act_skbmod.c:256 tcf_action_dump_old net/sched/act_api.c:1191 [inline] tcf_action_dump_1+0x85e/0x970 net/sched/act_api.c:1227 tcf_action_dump+0x1fd/0x460 net/sched/act_api.c:1251 tca_get_fill+0x519/0x7a0 net/sched/act_api.c:1628 tcf_add_notify_msg net/sched/act_api.c:2023 [inline] tcf_add_notify net/sched/act_api.c:2042 [inline] tcf_action_add net/sched/act_api.c:2071 [inline] tc_ctl_action+0x1365/0x19d0 net/sched/act_api.c:2119 rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595 netlink_rcv_skb+0x375/0x650 net/netlink/af_netli ---truncated---

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-23 19:31 UTC

Assigner

Linux mitre root

References

11 references

URL	Tags
https://git.kernel.org/stable/c/f190a4aa03cbd518b…
https://git.kernel.org/stable/c/f356eb2fb567e0931…
https://git.kernel.org/stable/c/5e45dc4408857305f…
https://git.kernel.org/stable/c/a097fc199ab5f4b53…
https://git.kernel.org/stable/c/55d3fe7b2b7bc354e…
https://git.kernel.org/stable/c/729ad2ac2a2cdc9f4…
https://git.kernel.org/stable/c/7bb2c7103d8c13b06…
https://git.kernel.org/stable/c/d313eb8b77557a6d5…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < f190a4aa03cbd518bd9c62a66e1233984f5fd2ec (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < f356eb2fb567e0931143ac1769ac802d3b3e2077 (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < 5e45dc4408857305f4685abfd7a528a1e58b51b5 (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < a097fc199ab5f4b5392c5144034c0d2148b55a14 (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < 55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366 (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < 729ad2ac2a2cdc9f4a4bdfd40bfd276e6bc33924 (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < 7bb2c7103d8c13b06a57bf997b8cdbe93cd7283c (git) Affected: 86da71b57383d40993cb90baafb3735cffe5d800 , < d313eb8b77557a6d5855f42d2234bd592c7b50dd (git)	guessed
Linux	Linux	Affected: 4.9 Unaffected: 0 , < 4.9 (semver) Unaffected: 4.19.312 , ≤ 4.19.* (semver) Unaffected: 5.4.274 , ≤ 5.4.* (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.154 , ≤ 5.15.* (semver) Unaffected: 6.1.85 , ≤ 6.1.* (semver) Unaffected: 6.6.26 , ≤ 6.6.* (semver) Unaffected: 6.8.5 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)	guessed
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)	guessed

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_skbmod: prevent kernel-infoleak\n\nsyzbot found that tcf_skbmod_dump() was copying four bytes\nfrom kernel stack to user space [1].\n\nThe issue here is that \u0027struct tc_skbmod\u0027 has a four bytes hole.\n\nWe need to clear the structure before filling fields.\n\n[1]\nBUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]\n BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline]\n BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]\n BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]\n BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185\n  instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n  copy_to_user_iter lib/iov_iter.c:24 [inline]\n  iterate_ubuf include/linux/iov_iter.h:29 [inline]\n  iterate_and_advance2 include/linux/iov_iter.h:245 [inline]\n  iterate_and_advance include/linux/iov_iter.h:271 [inline]\n  _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185\n  copy_to_iter include/linux/uio.h:196 [inline]\n  simple_copy_to_iter net/core/datagram.c:532 [inline]\n  __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420\n  skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546\n  skb_copy_datagram_msg include/linux/skbuff.h:4050 [inline]\n  netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962\n  sock_recvmsg_nosec net/socket.c:1046 [inline]\n  sock_recvmsg+0x2c4/0x340 net/socket.c:1068\n  __sys_recvfrom+0x35a/0x5f0 net/socket.c:2242\n  __do_sys_recvfrom net/socket.c:2260 [inline]\n  __se_sys_recvfrom net/socket.c:2256 [inline]\n  __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2256\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nUninit was stored to memory at:\n  pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253\n  netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1317\n  netlink_unicast+0x9f/0x1260 net/netlink/af_netlink.c:1351\n  nlmsg_unicast include/net/netlink.h:1144 [inline]\n  nlmsg_notify+0x21d/0x2f0 net/netlink/af_netlink.c:2610\n  rtnetlink_send+0x73/0x90 net/core/rtnetlink.c:741\n  rtnetlink_maybe_send include/linux/rtnetlink.h:17 [inline]\n  tcf_add_notify net/sched/act_api.c:2048 [inline]\n  tcf_action_add net/sched/act_api.c:2071 [inline]\n  tc_ctl_action+0x146e/0x19d0 net/sched/act_api.c:2119\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2559\n  rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6613\n  netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n  netlink_unicast+0xf4c/0x1260 net/netlink/af_netlink.c:1361\n  netlink_sendmsg+0x10df/0x11f0 net/netlink/af_netlink.c:1905\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:745\n  ____sys_sendmsg+0x877/0xb60 net/socket.c:2584\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638\n  __sys_sendmsg net/socket.c:2667 [inline]\n  __do_sys_sendmsg net/socket.c:2676 [inline]\n  __se_sys_sendmsg net/socket.c:2674 [inline]\n  __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nUninit was stored to memory at:\n  __nla_put lib/nlattr.c:1041 [inline]\n  nla_put+0x1c6/0x230 lib/nlattr.c:1099\n  tcf_skbmod_dump+0x23f/0xc20 net/sched/act_skbmod.c:256\n  tcf_action_dump_old net/sched/act_api.c:1191 [inline]\n  tcf_action_dump_1+0x85e/0x970 net/sched/act_api.c:1227\n  tcf_action_dump+0x1fd/0x460 net/sched/act_api.c:1251\n  tca_get_fill+0x519/0x7a0 net/sched/act_api.c:1628\n  tcf_add_notify_msg net/sched/act_api.c:2023 [inline]\n  tcf_add_notify net/sched/act_api.c:2042 [inline]\n  tcf_action_add net/sched/act_api.c:2071 [inline]\n  tc_ctl_action+0x1365/0x19d0 net/sched/act_api.c:2119\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netli\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:13:17.005Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f190a4aa03cbd518bd9c62a66e1233984f5fd2ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/f356eb2fb567e0931143ac1769ac802d3b3e2077"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e45dc4408857305f4685abfd7a528a1e58b51b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a097fc199ab5f4b5392c5144034c0d2148b55a14"
        },
        {
          "url": "https://git.kernel.org/stable/c/55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366"
        },
        {
          "url": "https://git.kernel.org/stable/c/729ad2ac2a2cdc9f4a4bdfd40bfd276e6bc33924"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bb2c7103d8c13b06a57bf997b8cdbe93cd7283c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d313eb8b77557a6d5855f42d2234bd592c7b50dd"
        }
      ],
      "title": "net/sched: act_skbmod: prevent kernel-infoleak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-35893",
    "datePublished": "2024-05-19T08:34:48.737Z",
    "dateReserved": "2024-05-17T13:50:33.113Z",
    "dateUpdated": "2026-05-12T11:52:28.473Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-35893",
      "date": "2026-09-17",
      "epss": "0.00234",
      "percentile": "0.14564"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35893\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-19T09:15:10.307\",\"lastModified\":\"2026-06-17T07:35:39.407\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: act_skbmod: prevent kernel-infoleak\\n\\nsyzbot found that tcf_skbmod_dump() was copying four bytes\\nfrom kernel stack to user space [1].\\n\\nThe issue here is that \u0027struct tc_skbmod\u0027 has a four bytes hole.\\n\\nWe need to clear the structure before filling fields.\\n\\n[1]\\nBUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\\n BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]\\n BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline]\\n BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]\\n BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]\\n BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185\\n  instrument_copy_to_user include/linux/instrumented.h:114 [inline]\\n  copy_to_user_iter lib/iov_iter.c:24 [inline]\\n  iterate_ubuf include/linux/iov_iter.h:29 [inline]\\n  iterate_and_advance2 include/linux/iov_iter.h:245 [inline]\\n  iterate_and_advance include/linux/iov_iter.h:271 [inline]\\n  _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185\\n  copy_to_iter include/linux/uio.h:196 [inline]\\n  simple_copy_to_iter net/core/datagram.c:532 [inline]\\n  __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420\\n  skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546\\n  skb_copy_datagram_msg include/linux/skbuff.h:4050 [inline]\\n  netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962\\n  sock_recvmsg_nosec net/socket.c:1046 [inline]\\n  sock_recvmsg+0x2c4/0x340 net/socket.c:1068\\n  __sys_recvfrom+0x35a/0x5f0 net/socket.c:2242\\n  __do_sys_recvfrom net/socket.c:2260 [inline]\\n  __se_sys_recvfrom net/socket.c:2256 [inline]\\n  __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2256\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was stored to memory at:\\n  pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253\\n  netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1317\\n  netlink_unicast+0x9f/0x1260 net/netlink/af_netlink.c:1351\\n  nlmsg_unicast include/net/netlink.h:1144 [inline]\\n  nlmsg_notify+0x21d/0x2f0 net/netlink/af_netlink.c:2610\\n  rtnetlink_send+0x73/0x90 net/core/rtnetlink.c:741\\n  rtnetlink_maybe_send include/linux/rtnetlink.h:17 [inline]\\n  tcf_add_notify net/sched/act_api.c:2048 [inline]\\n  tcf_action_add net/sched/act_api.c:2071 [inline]\\n  tc_ctl_action+0x146e/0x19d0 net/sched/act_api.c:2119\\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2559\\n  rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6613\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\\n  netlink_unicast+0xf4c/0x1260 net/netlink/af_netlink.c:1361\\n  netlink_sendmsg+0x10df/0x11f0 net/netlink/af_netlink.c:1905\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:745\\n  ____sys_sendmsg+0x877/0xb60 net/socket.c:2584\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638\\n  __sys_sendmsg net/socket.c:2667 [inline]\\n  __do_sys_sendmsg net/socket.c:2676 [inline]\\n  __se_sys_sendmsg net/socket.c:2674 [inline]\\n  __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was stored to memory at:\\n  __nla_put lib/nlattr.c:1041 [inline]\\n  nla_put+0x1c6/0x230 lib/nlattr.c:1099\\n  tcf_skbmod_dump+0x23f/0xc20 net/sched/act_skbmod.c:256\\n  tcf_action_dump_old net/sched/act_api.c:1191 [inline]\\n  tcf_action_dump_1+0x85e/0x970 net/sched/act_api.c:1227\\n  tcf_action_dump+0x1fd/0x460 net/sched/act_api.c:1251\\n  tca_get_fill+0x519/0x7a0 net/sched/act_api.c:1628\\n  tcf_add_notify_msg net/sched/act_api.c:2023 [inline]\\n  tcf_add_notify net/sched/act_api.c:2042 [inline]\\n  tcf_action_add net/sched/act_api.c:2071 [inline]\\n  tc_ctl_action+0x1365/0x19d0 net/sched/act_api.c:2119\\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netli\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/sched: act_skbmod: prevent kernel-infoleak syzbot encontr\u00f3 que tcf_skbmod_dump() estaba copiando cuatro bytes de la pila del kernel al espacio de usuario [1]. El problema aqu\u00ed es que \u0027struct tc_skbmod\u0027 tiene un agujero de cuatro bytes. Necesitamos borrar la estructura antes de completar los campos. [1] ERROR: KMSAN: kernel-infoleak en instrument_copy_to_user include/linux/instrumented.h:114 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en copy_to_user_iter lib/iov_iter.c:24 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en iterate_ubuf include/linux/iov_iter.h:29 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en iterate_and_advance2 include/linux/iov_iter.h:245 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en iterate_and_advance include/linux/iov_iter. h:271 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [en l\u00ednea] copy_to_user_iter lib/iov_iter.c:24 [en l\u00ednea] iterate_ubuf include/linux/iov_iter.h:29 [en l\u00ednea] iterate_and_advance2 include/linux/iov_iter.h:245 [en l\u00ednea] iterate_and_advance include/linux/iov_iter.h:271 [en l\u00ednea] _copy_to_iter+0x366/0x2520 lib/iov_iter.c: 185 copy_to_iter include/linux/uio.h:196 [en l\u00ednea] simple_copy_to_iter net/core/datagram.c:532 [en l\u00ednea] __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420 skb_copy_datagram_iter+0x5c/0x200 net/core/ datagram.c:546 skb_copy_datagram_msg include/linux/skbuff.h:4050 [en l\u00ednea] netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962 sock_recvmsg_nosec net/socket.c:1046 [en l\u00ednea] 0 neto/ socket.c:1068 __sys_recvfrom+0x35a/0x5f0 net/socket.c:2242 __do_sys_recvfrom net/socket.c:2260 [en l\u00ednea] __se_sys_recvfrom net/socket.c:2256 [en l\u00ednea] __x64_sys_recvfrom+0x126/0x1d0 net/ enchufe.c: 2256 do_syscall_64+0xd5/0x1f0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit se almacen\u00f3 en la memoria en: pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253 netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:13 17 netlink_unicast+0x9f/ 0x1260 net/netlink/af_netlink.c:1351 nlmsg_unicast include/net/netlink.h:1144 [en l\u00ednea] nlmsg_notify+0x21d/0x2f0 net/netlink/af_netlink.c:2610 rtnetlink_send+0x73/0x90 net/core/rtnetlink.c: 741 rtnetlink_maybe_send include/linux/rtnetlink.h:17 [en l\u00ednea] tcf_add_notify net/sched/act_api.c:2048 [en l\u00ednea] tcf_action_add net/sched/act_api.c:2071 [en l\u00ednea] tc_ctl_action+0x146e/0x19d0 net/sched/act_api .c:2119 rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2559 rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6613 netlink_unicast_kernel net / enlace de red /af_netlink.c:1335 [en l\u00ednea] netlink_unicast+0xf4c/0x1260 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x10df/0x11f0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 __sock_sendmsg + 0x30f/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 __do_sys_ enviar mensaje de red/socket. c:2676 [en l\u00ednea] __se_sys_sendmsg net/socket.c:2674 [en l\u00ednea] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 do_syscall_64+0xd5/0x1f0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 se almacen\u00f3 en la memoria en: __nla_put lib/nlattr .c:1041 [en l\u00ednea] nla_put+0x1c6/0x230 lib/nlattr.c:1099 tcf_skbmod_dump+0x23f/0xc20 net/sched/act_skbmod.c:256 tcf_action_dump_old net/sched/act_api.c:1191 tcf_action_dump_1+0x85 mi/ 0x970 net/sched/act_api.c:1227 tcf_action_dump+0x1fd/0x460 net/sched/act_api.c:1251 tca_get_fill+0x519/0x7a0 net/sched/act_api.c:1628 tcf_add_notify_msg net/sched/act_api.c:2023 [en l\u00ednea ] tcf_add_notify net/sched/act_api.c: 2042 [inline] tcf_action_add net/sched/act_api.c: 2071 [inline] tc_ctl_action+0x1365/0x19d0 net/sched/act_api.c: 2119 rtnetlink_rcv_msg+0x177/0x1900 rtnetlink.c:6595 netlink_rcv_skb+0x375/0x650 net/netlink/af_netli ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sched/act_skbmod.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"f190a4aa03cbd518bd9c62a66e1233984f5fd2ec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"f356eb2fb567e0931143ac1769ac802d3b3e2077\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"5e45dc4408857305f4685abfd7a528a1e58b51b5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"a097fc199ab5f4b5392c5144034c0d2148b55a14\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"729ad2ac2a2cdc9f4a4bdfd40bfd276e6bc33924\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"7bb2c7103d8c13b06a57bf997b8cdbe93cd7283c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86da71b57383d40993cb90baafb3735cffe5d800\",\"lessThan\":\"d313eb8b77557a6d5855f42d2234bd592c7b50dd\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sched/act_skbmod.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.312\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.274\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.215\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.154\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.85\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.26\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.5\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-05-23T19:31:02.298124Z\",\"id\":\"CVE-2024-35893\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T08:04:25+00:00",
      "cve": "CVE-2024-35893",
      "id": "CVE-2024-35893",
      "initial_release_date": "2024-05-19T00:00:00+00:00",
      "product_status:fixed": "150",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "122",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/sched: act_skbmod: prevent kernel-infoleak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-35893.json",
      "version": "3"
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[inline]\\n  iterate_and_advance include/linux/iov_iter.h:271 [inline]\\n  _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185\\n  copy_to_iter include/linux/uio.h:196 [inline]\\n  simple_copy_to_iter net/core/datagram.c:532 [inline]\\n  __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420\\n  skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546\\n  skb_copy_datagram_msg include/linux/skbuff.h:4050 [inline]\\n  netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962\\n  sock_recvmsg_nosec net/socket.c:1046 [inline]\\n  sock_recvmsg+0x2c4/0x340 net/socket.c:1068\\n  __sys_recvfrom+0x35a/0x5f0 net/socket.c:2242\\n  __do_sys_recvfrom net/socket.c:2260 [inline]\\n  __se_sys_recvfrom net/socket.c:2256 [inline]\\n  __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2256\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was stored to memory at:\\n  pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253\\n  netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1317\\n  netlink_unicast+0x9f/0x1260 net/netlink/af_netlink.c:1351\\n  nlmsg_unicast include/net/netlink.h:1144 [inline]\\n  nlmsg_notify+0x21d/0x2f0 net/netlink/af_netlink.c:2610\\n  rtnetlink_send+0x73/0x90 net/core/rtnetlink.c:741\\n  rtnetlink_maybe_send include/linux/rtnetlink.h:17 [inline]\\n  tcf_add_notify net/sched/act_api.c:2048 [inline]\\n  tcf_action_add net/sched/act_api.c:2071 [inline]\\n  tc_ctl_action+0x146e/0x19d0 net/sched/act_api.c:2119\\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2559\\n  rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6613\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\\n  netlink_unicast+0xf4c/0x1260 net/netlink/af_netlink.c:1361\\n  netlink_sendmsg+0x10df/0x11f0 net/netlink/af_netlink.c:1905\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:745\\n  ____sys_sendmsg+0x877/0xb60 net/socket.c:2584\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638\\n  __sys_sendmsg net/socket.c:2667 [inline]\\n  __do_sys_sendmsg net/socket.c:2676 [inline]\\n  __se_sys_sendmsg net/socket.c:2674 [inline]\\n  __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was stored to memory at:\\n  __nla_put lib/nlattr.c:1041 [inline]\\n  nla_put+0x1c6/0x230 lib/nlattr.c:1099\\n  tcf_skbmod_dump+0x23f/0xc20 net/sched/act_skbmod.c:256\\n  tcf_action_dump_old net/sched/act_api.c:1191 [inline]\\n  tcf_action_dump_1+0x85e/0x970 net/sched/act_api.c:1227\\n  tcf_action_dump+0x1fd/0x460 net/sched/act_api.c:1251\\n  tca_get_fill+0x519/0x7a0 net/sched/act_api.c:1628\\n  tcf_add_notify_msg net/sched/act_api.c:2023 [inline]\\n  tcf_add_notify net/sched/act_api.c:2042 [inline]\\n  tcf_action_add net/sched/act_api.c:2071 [inline]\\n  tc_ctl_action+0x1365/0x19d0 net/sched/act_api.c:2119\\n  rtnetlink_rcv_msg+0x1737/0x1900 net/core/rtnetlink.c:6595\\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netli\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.312\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.274\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.85\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.26\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.5\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"4.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:07:46.833Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35893\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:07:46.833Z\", \"dateReserved\": \"2024-05-17T13:50:33.113Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-19T08:34:48.737Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2024-35893 (GCVE-0-2024-35893)

Tags

Sightings

Nomenclature

Related by attack behaviour