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CVE-2024-33621 (GCVE-0-2024-33621)

Vulnerability from cvelistv5 – Published: 2024-06-21 10:18 – Updated: 2026-05-12 11:51
VLAI
Title
ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound
Summary
In the Linux kernel, the following vulnerability has been resolved: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound Raw packet from PF_PACKET socket ontop of an IPv6-backed ipvlan device will hit WARN_ON_ONCE() in sk_mc_loop() through sch_direct_xmit() path. WARNING: CPU: 2 PID: 0 at net/core/sock.c:775 sk_mc_loop+0x2d/0x70 Modules linked in: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper CPU: 2 PID: 0 Comm: swapper/2 Kdump: loaded Not tainted 6.9.0+ #279 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:sk_mc_loop+0x2d/0x70 Code: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c RSP: 0018:ffffa9584015cd78 EFLAGS: 00010212 RAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000 RBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00 R10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000 R13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: ffff91e589c0f000 FS: 0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ? __warn (kernel/panic.c:693) ? sk_mc_loop (net/core/sock.c:760) ? report_bug (lib/bug.c:201 lib/bug.c:219) ? handle_bug (arch/x86/kernel/traps.c:239) ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) ? sk_mc_loop (net/core/sock.c:760) ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminator 1)) ? nf_hook_slow (net/netfilter/core.c:626) ip6_finish_output (net/ipv6/ip6_output.c:222) ? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215) ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan dev_hard_start_xmit (net/core/dev.c:3594) sch_direct_xmit (net/sched/sch_generic.c:343) __qdisc_run (net/sched/sch_generic.c:416) net_tx_action (net/core/dev.c:5286) handle_softirqs (kernel/softirq.c:555) __irq_exit_rcu (kernel/softirq.c:589) sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043) The warning triggers as this: packet_sendmsg packet_snd //skb->sk is packet sk __dev_queue_xmit __dev_xmit_skb //q->enqueue is not NULL __qdisc_run sch_direct_xmit dev_hard_start_xmit ipvlan_start_xmit ipvlan_xmit_mode_l3 //l3 mode ipvlan_process_outbound //vepa flag ipvlan_process_v6_outbound ip6_local_out __ip6_finish_output ip6_finish_output2 //multicast packet sk_mc_loop //sk->sk_family is AF_PACKET Call ip{6}_local_out() with NULL sk in ipvlan as other tunnels to fix this.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:09 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 0049a623dfbbb49888de7f0c2f33a582b5ead989 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 54768bacfde60e8e4757968d79f8726711dd2cf5 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 1abbf079da59ef559d0ab4219d2a0302f7970761 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 183c4b416454b9983dc1b8aa0022b748911adc48 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < cb53706a3403ba67f4040b2a82d9cf79e11b1a48 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 54213c09801e0bd2549ac42961093be36f65a7d0 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < 13c4543db34e0da5a7d2f550b6262d860f248381 (git)
Affected: 2ad7bf3638411cb547f2823df08166c13ab04269 , < b3dc6e8003b500861fa307e9a3400c52e78e4d3a (git)
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Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.19.316 , ≤ 4.19.* (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.9.4 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvlan: Dont Use skb-\u003esk in ipvlan_process_v{4,6}_outbound\n\nRaw packet from PF_PACKET socket ontop of an IPv6-backed ipvlan device will\nhit WARN_ON_ONCE() in sk_mc_loop() through sch_direct_xmit() path.\n\nWARNING: CPU: 2 PID: 0 at net/core/sock.c:775 sk_mc_loop+0x2d/0x70\nModules linked in: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper\nCPU: 2 PID: 0 Comm: swapper/2 Kdump: loaded Not tainted 6.9.0+ #279\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nRIP: 0010:sk_mc_loop+0x2d/0x70\nCode: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c\nRSP: 0018:ffffa9584015cd78 EFLAGS: 00010212\nRAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001\nRDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000\nRBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00\nR10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000\nR13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: ffff91e589c0f000\nFS:  0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cIRQ\u003e\n ? __warn (kernel/panic.c:693)\n ? sk_mc_loop (net/core/sock.c:760)\n ? report_bug (lib/bug.c:201 lib/bug.c:219)\n ? handle_bug (arch/x86/kernel/traps.c:239)\n ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\n ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)\n ? sk_mc_loop (net/core/sock.c:760)\n ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminator 1))\n ? nf_hook_slow (net/netfilter/core.c:626)\n ip6_finish_output (net/ipv6/ip6_output.c:222)\n ? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215)\n ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan\n ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan\n dev_hard_start_xmit (net/core/dev.c:3594)\n sch_direct_xmit (net/sched/sch_generic.c:343)\n __qdisc_run (net/sched/sch_generic.c:416)\n net_tx_action (net/core/dev.c:5286)\n handle_softirqs (kernel/softirq.c:555)\n __irq_exit_rcu (kernel/softirq.c:589)\n sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043)\n\nThe warning triggers as this:\npacket_sendmsg\n   packet_snd //skb-\u003esk is packet sk\n      __dev_queue_xmit\n         __dev_xmit_skb //q-\u003eenqueue is not NULL\n             __qdisc_run\n               sch_direct_xmit\n                 dev_hard_start_xmit\n                   ipvlan_start_xmit\n                      ipvlan_xmit_mode_l3 //l3 mode\n                        ipvlan_process_outbound //vepa flag\n                          ipvlan_process_v6_outbound\n                            ip6_local_out\n                                __ip6_finish_output\n                                  ip6_finish_output2 //multicast packet\n                                    sk_mc_loop //sk-\u003esk_family is AF_PACKET\n\nCall ip{6}_local_out() with NULL sk in ipvlan as other tunnels to fix this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:10:52.354Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0049a623dfbbb49888de7f0c2f33a582b5ead989"
        },
        {
          "url": "https://git.kernel.org/stable/c/54768bacfde60e8e4757968d79f8726711dd2cf5"
        },
        {
          "url": "https://git.kernel.org/stable/c/1abbf079da59ef559d0ab4219d2a0302f7970761"
        },
        {
          "url": "https://git.kernel.org/stable/c/183c4b416454b9983dc1b8aa0022b748911adc48"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb53706a3403ba67f4040b2a82d9cf79e11b1a48"
        },
        {
          "url": "https://git.kernel.org/stable/c/54213c09801e0bd2549ac42961093be36f65a7d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/13c4543db34e0da5a7d2f550b6262d860f248381"
        },
        {
          "url": "https://git.kernel.org/stable/c/b3dc6e8003b500861fa307e9a3400c52e78e4d3a"
        }
      ],
      "title": "ipvlan: Dont Use skb-\u003esk in ipvlan_process_v{4,6}_outbound",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-33621",
    "datePublished": "2024-06-21T10:18:05.673Z",
    "dateReserved": "2024-06-21T10:13:16.298Z",
    "dateUpdated": "2026-05-12T11:51:54.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-33621",
      "date": "2026-09-17",
      "epss": "0.00268",
      "percentile": "0.19054"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-33621\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-21T11:15:09.860\",\"lastModified\":\"2026-06-17T07:32:06.320\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipvlan: Dont Use skb-\u003esk in ipvlan_process_v{4,6}_outbound\\n\\nRaw packet from PF_PACKET socket ontop of an IPv6-backed ipvlan device will\\nhit WARN_ON_ONCE() in sk_mc_loop() through sch_direct_xmit() path.\\n\\nWARNING: CPU: 2 PID: 0 at net/core/sock.c:775 sk_mc_loop+0x2d/0x70\\nModules linked in: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper\\nCPU: 2 PID: 0 Comm: swapper/2 Kdump: loaded Not tainted 6.9.0+ #279\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:sk_mc_loop+0x2d/0x70\\nCode: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c\\nRSP: 0018:ffffa9584015cd78 EFLAGS: 00010212\\nRAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001\\nRDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000\\nRBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00\\nR10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000\\nR13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: ffff91e589c0f000\\nFS:  0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cIRQ\u003e\\n ? __warn (kernel/panic.c:693)\\n ? sk_mc_loop (net/core/sock.c:760)\\n ? report_bug (lib/bug.c:201 lib/bug.c:219)\\n ? handle_bug (arch/x86/kernel/traps.c:239)\\n ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\\n ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)\\n ? sk_mc_loop (net/core/sock.c:760)\\n ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminator 1))\\n ? nf_hook_slow (net/netfilter/core.c:626)\\n ip6_finish_output (net/ipv6/ip6_output.c:222)\\n ? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215)\\n ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan\\n ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan\\n dev_hard_start_xmit (net/core/dev.c:3594)\\n sch_direct_xmit (net/sched/sch_generic.c:343)\\n __qdisc_run (net/sched/sch_generic.c:416)\\n net_tx_action (net/core/dev.c:5286)\\n handle_softirqs (kernel/softirq.c:555)\\n __irq_exit_rcu (kernel/softirq.c:589)\\n sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043)\\n\\nThe warning triggers as this:\\npacket_sendmsg\\n   packet_snd //skb-\u003esk is packet sk\\n      __dev_queue_xmit\\n         __dev_xmit_skb //q-\u003eenqueue is not NULL\\n             __qdisc_run\\n               sch_direct_xmit\\n                 dev_hard_start_xmit\\n                   ipvlan_start_xmit\\n                      ipvlan_xmit_mode_l3 //l3 mode\\n                        ipvlan_process_outbound //vepa flag\\n                          ipvlan_process_v6_outbound\\n                            ip6_local_out\\n                                __ip6_finish_output\\n                                  ip6_finish_output2 //multicast packet\\n                                    sk_mc_loop //sk-\u003esk_family is AF_PACKET\\n\\nCall ip{6}_local_out() with NULL sk in ipvlan as other tunnels to fix this.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipvlan: no use skb-\u0026gt;sk en ipvlan_process_v{4,6}_outbound El paquete sin procesar del socket PF_PACKET en la parte superior de un dispositivo ipvlan respaldado por IPv6 alcanzar\u00e1 WARN_ON_ONCE() en sk_mc_loop() a trav\u00e9s de la ruta sch_direct_xmit(). ADVERTENCIA: CPU: 2 PID: 0 en net/core/sock.c:775 sk_mc_loop+0x2d/0x70 M\u00f3dulos vinculados en: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper CPU: 2 PID: 0 Comm: swapper/2 Kdump: cargado No contaminado 6.9.0+ #279 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.15.0-1 01/04/2014 RIP: 0010:sk_mc_loop+0x2d/0x70 C\u00f3digo: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c RSP: 0018:ffffa9584015cd78 EFLAGS: 00010212 RAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000 RBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00 R10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000 R13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: e589c0f000 FS: 0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 00000000000000000 DR2: 0000000000000000 DR3: 00000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas:  ? __advertir (kernel/panic.c:693)? sk_mc_loop (net/core/sock.c:760)? report_bug (lib/bug.c:201 lib/bug.c:219)? handle_bug (arch/x86/kernel/traps.c:239)? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminador 1))? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)? sk_mc_loop (net/core/sock.c:760) ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminador 1))? nf_hook_slow (net/netfilter/core.c:626) ip6_finish_output (net/ipv6/ip6_output.c:222)? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215) ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan dev_hard_start_xmit (net/core/dev . c:3594) sch_direct_xmit (net/sched/sch_generic.c:343) __qdisc_run (net/sched/sch_generic.c:416) net_tx_action (net/core/dev.c:5286) handle_softirqs (kernel/softirq.c:555) __irq_exit_rcu (kernel/softirq.c:589) sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043) La advertencia se activa de la siguiente manera: paquete_sendmsg paquete_snd //skb-\u0026gt;sk es el paquete sk __dev_queue_xmit __dev_xmit_skb //q-\u0026gt; la cola no es NULL __qdisc_run sch_direct_xmit dev_hard_start_xmit ipvlan_start_xmit ipvlan_xmit_mode_l3 //modo l3 ipvlan_process_outbound //vepa flag ipvlan_process_v6_outbound ip6_local_out __ip6_finish_output ip6_finish_output2 //paquete de multidifusi\u00f3n sk_mc_loop //sk-\u0026gt; sk_family es AF_PACKET Llame a ip{6}_local_out() con NULL sk en ipvlan como otro t\u00faneles para solucionar este problema.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ipvlan/ipvlan_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"0049a623dfbbb49888de7f0c2f33a582b5ead989\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"54768bacfde60e8e4757968d79f8726711dd2cf5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"1abbf079da59ef559d0ab4219d2a0302f7970761\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"183c4b416454b9983dc1b8aa0022b748911adc48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"cb53706a3403ba67f4040b2a82d9cf79e11b1a48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"54213c09801e0bd2549ac42961093be36f65a7d0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"13c4543db34e0da5a7d2f550b6262d860f248381\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2ad7bf3638411cb547f2823df08166c13ab04269\",\"lessThan\":\"b3dc6e8003b500861fa307e9a3400c52e78e4d3a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ipvlan/ipvlan_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.316\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.278\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.219\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.161\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.93\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.33\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.4\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"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\":\"2024-09-10T17:09:47.521739Z\",\"id\":\"CVE-2024-33621\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T08:04:04+00:00",
      "cve": "CVE-2024-33621",
      "id": "CVE-2024-33621",
      "initial_release_date": "2024-06-21T00:00:00+00:00",
      "product_status:fixed": "929",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "51",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipvlan: Dont Use skb-\u0026gt;sk in ipvlan_process_v{4,6}_outbound",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-33621.json",
      "version": "3"
    },
    "vulnrichment": {
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ipvlan device will\\nhit WARN_ON_ONCE() in sk_mc_loop() through sch_direct_xmit() path.\\n\\nWARNING: CPU: 2 PID: 0 at net/core/sock.c:775 sk_mc_loop+0x2d/0x70\\nModules linked in: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper\\nCPU: 2 PID: 0 Comm: swapper/2 Kdump: loaded Not tainted 6.9.0+ #279\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:sk_mc_loop+0x2d/0x70\\nCode: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c\\nRSP: 0018:ffffa9584015cd78 EFLAGS: 00010212\\nRAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001\\nRDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000\\nRBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00\\nR10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000\\nR13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: ffff91e589c0f000\\nFS:  0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cIRQ\u003e\\n ? __warn (kernel/panic.c:693)\\n ? sk_mc_loop (net/core/sock.c:760)\\n ? report_bug (lib/bug.c:201 lib/bug.c:219)\\n ? handle_bug (arch/x86/kernel/traps.c:239)\\n ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\\n ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)\\n ? sk_mc_loop (net/core/sock.c:760)\\n ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminator 1))\\n ? nf_hook_slow (net/netfilter/core.c:626)\\n ip6_finish_output (net/ipv6/ip6_output.c:222)\\n ? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215)\\n ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan\\n ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan\\n dev_hard_start_xmit (net/core/dev.c:3594)\\n sch_direct_xmit (net/sched/sch_generic.c:343)\\n __qdisc_run (net/sched/sch_generic.c:416)\\n net_tx_action (net/core/dev.c:5286)\\n handle_softirqs (kernel/softirq.c:555)\\n __irq_exit_rcu (kernel/softirq.c:589)\\n sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043)\\n\\nThe warning triggers as this:\\npacket_sendmsg\\n   packet_snd //skb-\u003esk is packet sk\\n      __dev_queue_xmit\\n         __dev_xmit_skb //q-\u003eenqueue is not NULL\\n             __qdisc_run\\n               sch_direct_xmit\\n                 dev_hard_start_xmit\\n                   ipvlan_start_xmit\\n                      ipvlan_xmit_mode_l3 //l3 mode\\n                        ipvlan_process_outbound //vepa flag\\n                          ipvlan_process_v6_outbound\\n                            ip6_local_out\\n                                __ip6_finish_output\\n                                  ip6_finish_output2 //multicast packet\\n                                    sk_mc_loop //sk-\u003esk_family is AF_PACKET\\n\\nCall ip{6}_local_out() with NULL sk in ipvlan as other tunnels to fix this.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.316\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.278\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.219\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.4\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"3.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:10:52.354Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-33621\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:10:52.354Z\", \"dateReserved\": \"2024-06-21T10:13:16.298Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-21T10:18:05.673Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.


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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.