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FKIE_CVE-2021-47247

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-08-04 10:16
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free of encap entry in neigh update handler Function mlx5e_rep_neigh_update() wasn't updated to accommodate rtnl lock removal from TC filter update path and properly handle concurrent encap entry insertion/deletion which can lead to following use-after-free: [23827.464923] ================================================================== [23827.469446] BUG: KASAN: use-after-free in mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.470971] Read of size 4 at addr ffff8881d132228c by task kworker/u20:6/21635 [23827.472251] [23827.472615] CPU: 9 PID: 21635 Comm: kworker/u20:6 Not tainted 5.13.0-rc3+ #5 [23827.473788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [23827.475639] Workqueue: mlx5e mlx5e_rep_neigh_update [mlx5_core] [23827.476731] Call Trace: [23827.477260] dump_stack+0xbb/0x107 [23827.477906] print_address_description.constprop.0+0x18/0x140 [23827.478896] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.479879] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.480905] kasan_report.cold+0x7c/0xd8 [23827.481701] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.482744] kasan_check_range+0x145/0x1a0 [23827.493112] mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.494054] ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core] [23827.495296] mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core] [23827.496338] ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core] [23827.497486] ? read_word_at_a_time+0xe/0x20 [23827.498250] ? strscpy+0xa0/0x2a0 [23827.498889] process_one_work+0x8ac/0x14e0 [23827.499638] ? lockdep_hardirqs_on_prepare+0x400/0x400 [23827.500537] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [23827.501359] ? rwlock_bug.part.0+0x90/0x90 [23827.502116] worker_thread+0x53b/0x1220 [23827.502831] ? process_one_work+0x14e0/0x14e0 [23827.503627] kthread+0x328/0x3f0 [23827.504254] ? _raw_spin_unlock_irq+0x24/0x40 [23827.505065] ? __kthread_bind_mask+0x90/0x90 [23827.505912] ret_from_fork+0x1f/0x30 [23827.506621] [23827.506987] Allocated by task 28248: [23827.507694] kasan_save_stack+0x1b/0x40 [23827.508476] __kasan_kmalloc+0x7c/0x90 [23827.509197] mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core] [23827.510194] mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core] [23827.511218] __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core] [23827.512234] mlx5e_configure_flower+0x191c/0x4870 [mlx5_core] [23827.513298] tc_setup_cb_add+0x1d5/0x420 [23827.514023] fl_hw_replace_filter+0x382/0x6a0 [cls_flower] [23827.514975] fl_change+0x2ceb/0x4a51 [cls_flower] [23827.515821] tc_new_tfilter+0x89a/0x2070 [23827.516548] rtnetlink_rcv_msg+0x644/0x8c0 [23827.517300] netlink_rcv_skb+0x11d/0x340 [23827.518021] netlink_unicast+0x42b/0x700 [23827.518742] netlink_sendmsg+0x743/0xc20 [23827.519467] sock_sendmsg+0xb2/0xe0 [23827.520131] ____sys_sendmsg+0x590/0x770 [23827.520851] ___sys_sendmsg+0xd8/0x160 [23827.521552] __sys_sendmsg+0xb7/0x140 [23827.522238] do_syscall_64+0x3a/0x70 [23827.522907] entry_SYSCALL_64_after_hwframe+0x44/0xae [23827.523797] [23827.524163] Freed by task 25948: [23827.524780] kasan_save_stack+0x1b/0x40 [23827.525488] kasan_set_track+0x1c/0x30 [23827.526187] kasan_set_free_info+0x20/0x30 [23827.526968] __kasan_slab_free+0xed/0x130 [23827.527709] slab_free_freelist_hook+0xcf/0x1d0 [23827.528528] kmem_cache_free_bulk+0x33a/0x6e0 [23827.529317] kfree_rcu_work+0x55f/0xb70 [23827.530024] process_one_work+0x8ac/0x14e0 [23827.530770] worker_thread+0x53b/0x1220 [23827.531480] kthread+0x328/0x3f0 [23827.532114] ret_from_fork+0x1f/0x30 [23827.532785] [23827.533147] Last potentially related work creation: [23827.534007] kasan_save_stack+0x1b/0x40 [23827.534710] kasan_record_aux_stack+0xab/0xc0 [23827.535492] kvfree_call_rcu+0x31/0x7b0 [23827.536206] mlx5e_tc_del ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d1e7a7964ce6abb28883a3906bbc20fe0009f03Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6447b72aca571632e71bb73a797118d5ce46a93Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb1a3132ee1ac968316e45d21a48703a6db0b6c3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b6447b72aca571632e71bb73a797118d5ce46a93Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fb1a3132ee1ac968316e45d21a48703a6db0b6c3Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
debian debian_linux 11.0
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en_tc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0d1e7a7964ce6abb28883a3906bbc20fe0009f03",
              "status": "affected",
              "version": "2a1f1768fa17805ca2e937e2e034a7c3433d3bdc",
              "versionType": "git"
            },
            {
              "lessThan": "b6447b72aca571632e71bb73a797118d5ce46a93",
              "status": "affected",
              "version": "2a1f1768fa17805ca2e937e2e034a7c3433d3bdc",
              "versionType": "git"
            },
            {
              "lessThan": "fb1a3132ee1ac968316e45d21a48703a6db0b6c3",
              "status": "affected",
              "version": "2a1f1768fa17805ca2e937e2e034a7c3433d3bdc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/neigh.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en_tc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.237",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A97CFFC1-1A90-4594-A6D8-FE2823A7BB24",
              "versionEndExcluding": "5.10.237",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7806E7E5-6D4F-4E18-81C1-79B3C60EE855",
              "versionEndExcluding": "5.12.13",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "1ECD33F5-85BE-430B-8F86-8D7BD560311D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "CF351855-2437-4CF5-AD7C-BDFA51F27683",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "25A855BA-2118-44F2-90EF-EBBB12AF51EF",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix use-after-free of encap entry in neigh update handler\n\nFunction mlx5e_rep_neigh_update() wasn\u0027t updated to accommodate rtnl lock\nremoval from TC filter update path and properly handle concurrent encap\nentry insertion/deletion which can lead to following use-after-free:\n\n [23827.464923] ==================================================================\n [23827.469446] BUG: KASAN: use-after-free in mlx5e_encap_take+0x72/0x140 [mlx5_core]\n [23827.470971] Read of size 4 at addr ffff8881d132228c by task kworker/u20:6/21635\n [23827.472251]\n [23827.472615] CPU: 9 PID: 21635 Comm: kworker/u20:6 Not tainted 5.13.0-rc3+ #5\n [23827.473788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n [23827.475639] Workqueue: mlx5e mlx5e_rep_neigh_update [mlx5_core]\n [23827.476731] Call Trace:\n [23827.477260]  dump_stack+0xbb/0x107\n [23827.477906]  print_address_description.constprop.0+0x18/0x140\n [23827.478896]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]\n [23827.479879]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]\n [23827.480905]  kasan_report.cold+0x7c/0xd8\n [23827.481701]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]\n [23827.482744]  kasan_check_range+0x145/0x1a0\n [23827.493112]  mlx5e_encap_take+0x72/0x140 [mlx5_core]\n [23827.494054]  ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core]\n [23827.495296]  mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core]\n [23827.496338]  ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core]\n [23827.497486]  ? read_word_at_a_time+0xe/0x20\n [23827.498250]  ? strscpy+0xa0/0x2a0\n [23827.498889]  process_one_work+0x8ac/0x14e0\n [23827.499638]  ? lockdep_hardirqs_on_prepare+0x400/0x400\n [23827.500537]  ? pwq_dec_nr_in_flight+0x2c0/0x2c0\n [23827.501359]  ? rwlock_bug.part.0+0x90/0x90\n [23827.502116]  worker_thread+0x53b/0x1220\n [23827.502831]  ? process_one_work+0x14e0/0x14e0\n [23827.503627]  kthread+0x328/0x3f0\n [23827.504254]  ? _raw_spin_unlock_irq+0x24/0x40\n [23827.505065]  ? __kthread_bind_mask+0x90/0x90\n [23827.505912]  ret_from_fork+0x1f/0x30\n [23827.506621]\n [23827.506987] Allocated by task 28248:\n [23827.507694]  kasan_save_stack+0x1b/0x40\n [23827.508476]  __kasan_kmalloc+0x7c/0x90\n [23827.509197]  mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core]\n [23827.510194]  mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core]\n [23827.511218]  __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core]\n [23827.512234]  mlx5e_configure_flower+0x191c/0x4870 [mlx5_core]\n [23827.513298]  tc_setup_cb_add+0x1d5/0x420\n [23827.514023]  fl_hw_replace_filter+0x382/0x6a0 [cls_flower]\n [23827.514975]  fl_change+0x2ceb/0x4a51 [cls_flower]\n [23827.515821]  tc_new_tfilter+0x89a/0x2070\n [23827.516548]  rtnetlink_rcv_msg+0x644/0x8c0\n [23827.517300]  netlink_rcv_skb+0x11d/0x340\n [23827.518021]  netlink_unicast+0x42b/0x700\n [23827.518742]  netlink_sendmsg+0x743/0xc20\n [23827.519467]  sock_sendmsg+0xb2/0xe0\n [23827.520131]  ____sys_sendmsg+0x590/0x770\n [23827.520851]  ___sys_sendmsg+0xd8/0x160\n [23827.521552]  __sys_sendmsg+0xb7/0x140\n [23827.522238]  do_syscall_64+0x3a/0x70\n [23827.522907]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n [23827.523797]\n [23827.524163] Freed by task 25948:\n [23827.524780]  kasan_save_stack+0x1b/0x40\n [23827.525488]  kasan_set_track+0x1c/0x30\n [23827.526187]  kasan_set_free_info+0x20/0x30\n [23827.526968]  __kasan_slab_free+0xed/0x130\n [23827.527709]  slab_free_freelist_hook+0xcf/0x1d0\n [23827.528528]  kmem_cache_free_bulk+0x33a/0x6e0\n [23827.529317]  kfree_rcu_work+0x55f/0xb70\n [23827.530024]  process_one_work+0x8ac/0x14e0\n [23827.530770]  worker_thread+0x53b/0x1220\n [23827.531480]  kthread+0x328/0x3f0\n [23827.532114]  ret_from_fork+0x1f/0x30\n [23827.532785]\n [23827.533147] Last potentially related work creation:\n [23827.534007]  kasan_save_stack+0x1b/0x40\n [23827.534710]  kasan_record_aux_stack+0xab/0xc0\n [23827.535492]  kvfree_call_rcu+0x31/0x7b0\n [23827.536206]  mlx5e_tc_del\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/mlx5e: se corrigi\u00f3 el use after free de la entrada encap en el controlador de actualizaci\u00f3n cercano. La funci\u00f3n mlx5e_rep_neigh_update() no se actualiz\u00f3 para permitir la eliminaci\u00f3n del bloqueo rtnl de la ruta de actualizaci\u00f3n del filtro TC y manejar adecuadamente inserci\u00f3n/eliminaci\u00f3n simult\u00e1nea de entradas encapsuladas que pueden conducir al siguiente use after free: [23827.464923] ================================ ==================================== [23827.469446] BUG: KASAN: use after free en mlx5e_encap_take +0x72/0x140 [mlx5_core] [23827.470971] Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff8881d132228c por tarea kworker/u20:6/21635 [23827.472251] [23827.472615] CPU: 9 PID: 21635 kworker/u20 :6 No contaminado 5.13.0 -rc3+ #5 [23827.473788] Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 01/04/2014 [23827.475639] Cola de trabajo: mlx5e mlx5e_rep_neigh_update [ mlx5_core] [23827.476731] Seguimiento de llamadas: [23827.477260] dump_stack+0xbb/0x107 [23827.477906] print_address_description.constprop.0+0x18/0x140 [23827.478896]? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.479879] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.480905] kasan_report.cold+0x7c/0xd8 [23827.481701] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.482744] kasan_check_range+0x145/0x1a0 [23827.493112] mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.494054] ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core] [23827.495296] mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core] [23827.496338] ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core] [23827.497486] ? read_word_at_a_time+0xe/0x20 [23827.498250] ? strscpy+0xa0/0x2a0 [23827.498889] process_one_work+0x8ac/0x14e0 [23827.499638] ? lockdep_hardirqs_on_prepare+0x400/0x400 [23827.500537]? pwq_dec_nr_in_flight+0x2c0/0x2c0 [23827.501359] ? rwlock_bug.part.0+0x90/0x90 [23827.502116] worker_thread+0x53b/0x1220 [23827.502831]? Process_one_work+0x14e0/0x14e0 [23827.503627] kthread+0x328/0x3f0 [23827.504254] ? _raw_spin_unlock_irq+0x24/0x40 [23827.505065] ? __kthread_bind_mask+0x90/0x90 [23827.505912] ret_from_fork+0x1f/0x30 [23827.506621] [23827.506987] Asignado por tarea 28248: [23827.507694] 0 [23827.508476] __kasan_kmalloc+0x7c/0x90 [23827.509197] mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core ] [23827.510194] mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core] [23827.511218] __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core] [23827.512234] 191c/0x4870 [mlx5_core] [23827.513298] tc_setup_cb_add+0x1d5/0x420 [23827.514023] fl_hw_replace_filter+0x382/0x6a0 [cls_flower] [23827.514975] fl_change+0x2ceb/0x4a51 [cls_flower] [23827.515821] tc_new_tfilter+0x89a/0x2070 [23827.516548] rtnetlink_rcv_msg+0x644/0x8c0 [23827.51 7300] netlink_rcv_skb+0x11d/0x340 [23827.518021] netlink_unicast+0x42b/0x700 [23827.518742] netlink_sendmsg +0x743/0xc20 [23827.519467] sock_sendmsg+0xb2/0xe0 [23827.520131] ____sys_sendmsg+0x590/0x770 [23827.520851] ___sys_sendmsg+0xd8/0x160 [23827. 521552] __sys_sendmsg+0xb7/0x140 [23827.522238] do_syscall_64+0x3a/0x70 [23827.522907] Entry_SYSCALL_64_after_hwframe+0x44 /0xae [23827.523797] [23827.524163] Liberado por la tarea 25948: [23827.524780] kasan_save_stack+0x1b/0x40 [23827.525488] kasan_set_track+0x1c/0x30 [23827.526187] _free_info+0x20/0x30 [23827.526968] __kasan_slab_free+0xed/0x130 [23827.527709] slab_free_freelist_hook+ 0xcf/0x1d0 [23827.528528] kmem_cache_free_bulk+0x33a/0x6e0 [23827.529317] kfree_rcu_work+0x55f/0xb70 [23827.530024] Process_one_work+0x8ac/0x14e0 [23827.530770 ] work_thread+0x53b/0x1220 [23827.531480] kthread+0x328/0x3f0 [23827.532114] ret_from_fork+0x1f/ 0x30 [23827.532785] [23827.533147] \u00daltima creaci\u00f3n de trabajo potencialmente relacionado: [23827.534007] kasan_save_stack+0x1b/0x40 [23827.534710] kasan_record_aux_stack+0xab/0xc0 [23827.535492] _rcu+0x31/0x7b0 [23827.536206] mlx5e_tc_del ---truncado---"
    }
  ],
  "id": "CVE-2021-47247",
  "lastModified": "2026-08-04T10:16:54.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47247",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-28T15:53:08.543525Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T15:15:13.703",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0d1e7a7964ce6abb28883a3906bbc20fe0009f03"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b6447b72aca571632e71bb73a797118d5ce46a93"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fb1a3132ee1ac968316e45d21a48703a6db0b6c3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b6447b72aca571632e71bb73a797118d5ce46a93"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fb1a3132ee1ac968316e45d21a48703a6db0b6c3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.