CVE-2026-23277 (GCVE-0-2026-23277)

Vulnerability from cvelistv5 – Published: 2026-03-20 08:08 – Updated: 2026-07-14 12:46
VLAI
Title
net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit teql_master_xmit() calls netdev_start_xmit(skb, slave) to transmit through slave devices, but does not update skb->dev to the slave device beforehand. When a gretap tunnel is a TEQL slave, the transmit path reaches iptunnel_xmit() which saves dev = skb->dev (still pointing to teql0 master) and later calls iptunnel_xmit_stats(dev, pkt_len). This function does: get_cpu_ptr(dev->tstats) Since teql_master_setup() does not set dev->pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS, the core network stack never allocates tstats for teql0, so dev->tstats is NULL. get_cpu_ptr(NULL) computes NULL + __per_cpu_offset[cpu], resulting in a page fault. BUG: unable to handle page fault for address: ffff8880e6659018 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 68bc067 P4D 68bc067 PUD 0 Oops: Oops: 0002 [#1] SMP KASAN PTI RIP: 0010:iptunnel_xmit (./include/net/ip_tunnels.h:664 net/ipv4/ip_tunnel_core.c:89) Call Trace: <TASK> ip_tunnel_xmit (net/ipv4/ip_tunnel.c:847) __gre_xmit (net/ipv4/ip_gre.c:478) gre_tap_xmit (net/ipv4/ip_gre.c:779) teql_master_xmit (net/sched/sch_teql.c:319) dev_hard_start_xmit (net/core/dev.c:3887) sch_direct_xmit (net/sched/sch_generic.c:347) __dev_queue_xmit (net/core/dev.c:4802) neigh_direct_output (net/core/neighbour.c:1660) ip_finish_output2 (net/ipv4/ip_output.c:237) __ip_finish_output.part.0 (net/ipv4/ip_output.c:315) ip_mc_output (net/ipv4/ip_output.c:369) ip_send_skb (net/ipv4/ip_output.c:1508) udp_send_skb (net/ipv4/udp.c:1195) udp_sendmsg (net/ipv4/udp.c:1485) inet_sendmsg (net/ipv4/af_inet.c:859) __sys_sendto (net/socket.c:2206) Fix this by setting skb->dev = slave before calling netdev_start_xmit(), so that tunnel xmit functions see the correct slave device with properly allocated tstats.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 383493b9940e3d1b5517424081b3e072e20ec43c (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 6b1f563d670162e188a0f2aec39c24b67b106e17 (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 57c153249143333bbf4ecf927bdf8aa2696ee397 (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 59b06d8b9bdb6b64b3c534c18da68bce5ccd31be (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 81a43e8005366f16e629d8c95dfe05beaa8d36a7 (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 0bad9c86edd22dec4df83c2b29872d66fd8a2ff4 (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 21ea283c2750c8307aa35ee832b0951cc993c27d (git)
Affected: 039f50629b7f860f36644ed1f34b27da9aa62f43 , < 0cc0c2e661af418bbf7074179ea5cfffc0a5c466 (git)
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Linux Linux Affected: 4.5
Unaffected: 0 , < 4.5 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit\n\nteql_master_xmit() calls netdev_start_xmit(skb, slave) to transmit\nthrough slave devices, but does not update skb-\u003edev to the slave device\nbeforehand.\n\nWhen a gretap tunnel is a TEQL slave, the transmit path reaches\niptunnel_xmit() which saves dev = skb-\u003edev (still pointing to teql0\nmaster) and later calls iptunnel_xmit_stats(dev, pkt_len). This\nfunction does:\n\n    get_cpu_ptr(dev-\u003etstats)\n\nSince teql_master_setup() does not set dev-\u003epcpu_stat_type to\nNETDEV_PCPU_STAT_TSTATS, the core network stack never allocates tstats\nfor teql0, so dev-\u003etstats is NULL. get_cpu_ptr(NULL) computes\nNULL + __per_cpu_offset[cpu], resulting in a page fault.\n\n BUG: unable to handle page fault for address: ffff8880e6659018\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page\n PGD 68bc067 P4D 68bc067 PUD 0\n Oops: Oops: 0002 [#1] SMP KASAN PTI\n RIP: 0010:iptunnel_xmit (./include/net/ip_tunnels.h:664 net/ipv4/ip_tunnel_core.c:89)\n Call Trace:\n  \u003cTASK\u003e\n  ip_tunnel_xmit (net/ipv4/ip_tunnel.c:847)\n  __gre_xmit (net/ipv4/ip_gre.c:478)\n  gre_tap_xmit (net/ipv4/ip_gre.c:779)\n  teql_master_xmit (net/sched/sch_teql.c:319)\n  dev_hard_start_xmit (net/core/dev.c:3887)\n  sch_direct_xmit (net/sched/sch_generic.c:347)\n  __dev_queue_xmit (net/core/dev.c:4802)\n  neigh_direct_output (net/core/neighbour.c:1660)\n  ip_finish_output2 (net/ipv4/ip_output.c:237)\n  __ip_finish_output.part.0 (net/ipv4/ip_output.c:315)\n  ip_mc_output (net/ipv4/ip_output.c:369)\n  ip_send_skb (net/ipv4/ip_output.c:1508)\n  udp_send_skb (net/ipv4/udp.c:1195)\n  udp_sendmsg (net/ipv4/udp.c:1485)\n  inet_sendmsg (net/ipv4/af_inet.c:859)\n  __sys_sendto (net/socket.c:2206)\n\nFix this by setting skb-\u003edev = slave before calling\nnetdev_start_xmit(), so that tunnel xmit functions see the correct\nslave device with properly allocated tstats."
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23277\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-20T09:16:13.533\",\"lastModified\":\"2026-07-14T13:18:28.530\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit\\n\\nteql_master_xmit() calls netdev_start_xmit(skb, slave) to transmit\\nthrough slave devices, but does not update skb-\u003edev to the slave device\\nbeforehand.\\n\\nWhen a gretap tunnel is a TEQL slave, the transmit path reaches\\niptunnel_xmit() which saves dev = skb-\u003edev (still pointing to teql0\\nmaster) and later calls iptunnel_xmit_stats(dev, pkt_len). This\\nfunction does:\\n\\n    get_cpu_ptr(dev-\u003etstats)\\n\\nSince teql_master_setup() does not set dev-\u003epcpu_stat_type to\\nNETDEV_PCPU_STAT_TSTATS, the core network stack never allocates tstats\\nfor teql0, so dev-\u003etstats is NULL. get_cpu_ptr(NULL) computes\\nNULL + __per_cpu_offset[cpu], resulting in a page fault.\\n\\n BUG: unable to handle page fault for address: ffff8880e6659018\\n #PF: supervisor write access in kernel mode\\n #PF: error_code(0x0002) - not-present page\\n PGD 68bc067 P4D 68bc067 PUD 0\\n Oops: Oops: 0002 [#1] SMP KASAN PTI\\n RIP: 0010:iptunnel_xmit (./include/net/ip_tunnels.h:664 net/ipv4/ip_tunnel_core.c:89)\\n Call Trace:\\n  \u003cTASK\u003e\\n  ip_tunnel_xmit (net/ipv4/ip_tunnel.c:847)\\n  __gre_xmit (net/ipv4/ip_gre.c:478)\\n  gre_tap_xmit (net/ipv4/ip_gre.c:779)\\n  teql_master_xmit (net/sched/sch_teql.c:319)\\n  dev_hard_start_xmit (net/core/dev.c:3887)\\n  sch_direct_xmit (net/sched/sch_generic.c:347)\\n  __dev_queue_xmit (net/core/dev.c:4802)\\n  neigh_direct_output (net/core/neighbour.c:1660)\\n  ip_finish_output2 (net/ipv4/ip_output.c:237)\\n  __ip_finish_output.part.0 (net/ipv4/ip_output.c:315)\\n  ip_mc_output (net/ipv4/ip_output.c:369)\\n  ip_send_skb (net/ipv4/ip_output.c:1508)\\n  udp_send_skb (net/ipv4/udp.c:1195)\\n  udp_sendmsg (net/ipv4/udp.c:1485)\\n  inet_sendmsg (net/ipv4/af_inet.c:859)\\n  __sys_sendto (net/socket.c:2206)\\n\\nFix this by setting skb-\u003edev = slave before calling\\nnetdev_start_xmit(), so that tunnel xmit functions see the correct\\nslave device with properly allocated tstats.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nnet/sched: teql: corrige la desreferenciaci\u00f3n de puntero NULL en iptunnel_xmit en la transmisi\u00f3n del esclavo TEQL\\n\\nteql_master_xmit() llama a netdev_start_xmit(skb, slave) para transmitir a trav\u00e9s de dispositivos esclavos, pero no actualiza skb-\u0026gt;dev al dispositivo esclavo de antemano.\\n\\nCuando un t\u00fanel gretap es un esclavo TEQL, la ruta de transmisi\u00f3n llega a iptunnel_xmit() que guarda dev = skb-\u0026gt;dev (todav\u00eda apuntando al maestro teql0) y luego llama a iptunnel_xmit_stats(dev, pkt_len). Esta funci\u00f3n hace:\\n\\n    get_cpu_ptr(dev-\u0026gt;tstats)\\n\\nDado que teql_master_setup() no establece dev-\u0026gt;pcpu_stat_type en NETDEV_PCPU_STAT_TSTATS, la pila de red central nunca asigna tstats para teql0, por lo que dev-\u0026gt;tstats es NULL. get_cpu_ptr(NULL) calcula NULL + __per_cpu_offset[cpu], lo que resulta en un fallo de p\u00e1gina.\\n\\n ERROR: no se puede manejar el fallo de p\u00e1gina para la direcci\u00f3n: ffff8880e6659018\\n #PF: acceso de escritura de supervisor en modo kernel\\n #PF: c\u00f3digo_de_error(0x0002) - p\u00e1gina no presente\\n PGD 68bc067 P4D 68bc067 PUD 0\\n Oops: Oops: 0002 [#1] SMP KASAN PTI\\n RIP: 0010:iptunnel_xmit (./include/net/ip_tunnels.h:664 net/ipv4/ip_tunnel_core.c:89)\\n Traza de Llamadas:\\n  \\n  ip_tunnel_xmit (net/ipv4/ip_tunnel.c:847)\\n  __gre_xmit (net/ipv4/ip_gre.c:478)\\n  gre_tap_xmit (net/ipv4/ip_gre.c:779)\\n  teql_master_xmit (net/sched/sch_teql.c:319)\\n  dev_hard_start_xmit (net/core/dev.c:3887)\\n  sch_direct_xmit (net/sched/sch_generic.c:347)\\n  __dev_queue_xmit (net/core/dev.c:4802)\\n  neigh_direct_output (net/core/neighbour.c:1660)\\n  ip_finish_output2 (net/ipv4/ip_output.c:237)\\n  __ip_finish_output.part.0 (net/ipv4/ip_output.c:315)\\n  ip_mc_output (net/ipv4/ip_output.c:369)\\n  ip_send_skb (net/ipv4/ip_output.c:1508)\\n  udp_send_skb (net/ipv4/udp.c:1195)\\n  udp_sendmsg (net/ipv4/udp.c:1485)\\n  inet_sendmsg (net/ipv4/af_inet.c:859)\\n  __sys_sendto (net/socket.c:2206)\\n\\nSolucione esto estableciendo skb-\u0026gt;dev = slave antes de llamar a netdev_start_xmit(), para que las funciones de transmisi\u00f3n del t\u00fanel vean el dispositivo esclavo correcto con tstats correctamente asignados.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sched/sch_teql.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"383493b9940e3d1b5517424081b3e072e20ec43c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"6b1f563d670162e188a0f2aec39c24b67b106e17\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"57c153249143333bbf4ecf927bdf8aa2696ee397\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"59b06d8b9bdb6b64b3c534c18da68bce5ccd31be\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"81a43e8005366f16e629d8c95dfe05beaa8d36a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"0bad9c86edd22dec4df83c2b29872d66fd8a2ff4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"21ea283c2750c8307aa35ee832b0951cc993c27d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"039f50629b7f860f36644ed1f34b27da9aa62f43\",\"lessThan\":\"0cc0c2e661af418bbf7074179ea5cfffc0a5c466\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sched/sch_teql.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.253\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.203\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.167\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.130\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.78\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.19\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.9\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.5\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.5\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.5\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.5\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.5\",\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.5\",\"versionEndExcluding\":\"5.10.253\",\"matchCriteriaId\":\"5817BDB6-4C64-4AB6-83FF-CC693A5E4906\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.203\",\"matchCriteriaId\":\"20DDB3E9-AABF-4107-ADB0-5362AA067045\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.167\",\"matchCriteriaId\":\"2EDC6BAF-B710-4E26-B6AA-D68922EE7B43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.130\",\"matchCriteriaId\":\"C57BB918-DF28-46B3-94F7-144176841267\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.78\",\"matchCriteriaId\":\"28D591F5-B196-4CC9-905C-DC80F116E7A8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.19\",\"matchCriteriaId\":\"D394AC60-6F28-435F-872A-CCDF384B8331\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.9\",\"matchCriteriaId\":\"E825E7C3-FEAC-4FD3-8A81-78D7387948C9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"F253B622-8837-4245-BCE5-A7BF8FC76A16\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F666C8D8-6538-46D4-B318-87610DE64C34\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0bad9c86edd22dec4df83c2b29872d66fd8a2ff4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0cc0c2e661af418bbf7074179ea5cfffc0a5c466\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/21ea283c2750c8307aa35ee832b0951cc993c27d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/383493b9940e3d1b5517424081b3e072e20ec43c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/57c153249143333bbf4ecf927bdf8aa2696ee397\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/59b06d8b9bdb6b64b3c534c18da68bce5ccd31be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6b1f563d670162e188a0f2aec39c24b67b106e17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81a43e8005366f16e629d8c95dfe05beaa8d36a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-019113.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-082556.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-03T14:58:55+00:00",
      "cve": "CVE-2026-23277",
      "id": "CVE-2026-23277",
      "initial_release_date": "2026-03-20T00:00:00+00:00",
      "product_status:known_affected": "90",
      "product_status:known_not_affected": "184",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23277.json",
      "version": "3"
    }
  }
}



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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.