CVE-2026-31508

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-22. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-24887 (ENISA EUVD) · GHSA-ccx4-p8v9-jp86 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: Avoid releasing netdev before teardown completes

The patch cited in the Fixes tag below changed the teardown code for OVS ports to no longer unconditionally take the RTNL. After this change, the netdev_destroy() callback can proceed immediately to the call_rcu() invocation if the IFF_OVS_DATAPATH flag is already cleared on the netdev.

The ovs_netdev_detach_dev() function clears the flag before completing the unregistration, and if it gets preempted after clearing the flag (as can happen on an -rt kernel), netdev_destroy() can complete and the device can be freed before the unregistration completes. This leads to a splat like:

[ 998.393867] Oops: general protection fault, probably for non-canonical address 0xff00000001000239: 0000 [#1] SMP PTI [ 998.393877] CPU: 42 UID: 0 PID: 55177 Comm: ip Kdump: loaded Not tainted 6.12.0-211.1.1.el10_2.x86_64+rt #1 PREEMPT_RT [ 998.393886] Hardware name: Dell Inc. PowerEdge R740/0JMK61, BIOS 2.24.0 03/27/2025 [ 998.393889] RIP: 0010:dev_set_promiscuity+0x8d/0xa0 [ 998.393901] Code: 00 00 75 d8 48 8b 53 08 48 83 ba b0 02 00 00 00 75 ca 48 83 c4 08 5b c3 cc cc cc cc 48 83 bf 48 09 00 00 00 75 91 48 8b 47 08 <48> 83 b8 b0 02 00 00 00 74 97 eb 81 0f 1f 80 00 00 00 00 90 90 90 [ 998.393906] RSP: 0018:ffffce5864a5f6a0 EFLAGS: 00010246 [ 998.393912] RAX: ff00000000ffff89 RBX: ffff894d0adf5a05 RCX: 0000000000000000 [ 998.393917] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff894d0adf5a05 [ 998.393921] RBP: ffff894d19252000 R08: ffff894d19252000 R09: 0000000000000000 [ 998.393924] R10: ffff894d19252000 R11: ffff894d192521b8 R12: 0000000000000006 [ 998.393927] R13: ffffce5864a5f738 R14: 00000000ffffffe2 R15: 0000000000000000 [ 998.393931] FS: 00007fad61971800(0000) GS:ffff894cc0140000(0000) knlGS:0000000000000000 [ 998.393936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 998.393940] CR2: 000055df0a2a6e40 CR3: 000000011c7fe003 CR4: 00000000007726f0 [ 998.393944] PKRU: 55555554 [ 998.393946] Call Trace: [ 998.393949] [ 998.393952] ? show_trace_log_lvl+0x1b0/0x2f0 [ 998.393961] ? show_trace_log_lvl+0x1b0/0x2f0 [ 998.393975] ? dp_device_event+0x41/0x80 [openvswitch] [ 998.394009] ? __die_body.cold+0x8/0x12 [ 998.394016] ? die_addr+0x3c/0x60 [ 998.394027] ? exc_general_protection+0x16d/0x390 [ 998.394042] ? asm_exc_general_protection+0x26/0x30 [ 998.394058] ? dev_set_promiscuity+0x8d/0xa0 [ 998.394066] ? ovs_netdev_detach_dev+0x3a/0x80 [openvswitch] [ 998.394092] dp_device_event+0x41/0x80 [openvswitch] [ 998.394102] notifier_call_chain+0x5a/0xd0 [ 998.394106] unregister_netdevice_many_notify+0x51b/0xa60 [ 998.394110] rtnl_dellink+0x169/0x3e0 [ 998.394121] ? rt_mutex_slowlock.constprop.0+0x95/0xd0 [ 998.394125] rtnetlink_rcv_msg+0x142/0x3f0 [ 998.394128] ? avc_has_perm_noaudit+0x69/0xf0 [ 998.394130] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 998.394132] netlink_rcv_skb+0x50/0x100 [ 998.394138] netlink_unicast+0x292/0x3f0 [ 998.394141] netlink_sendmsg+0x21b/0x470 [ 998.394145] ____sys_sendmsg+0x39d/0x3d0 [ 998.394149] ___sys_sendmsg+0x9a/0xe0 [ 998.394156] __sys_sendmsg+0x7a/0xd0 [ 998.394160] do_syscall_64+0x7f/0x170 [ 998.394162] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 998.394165] RIP: 0033:0x7fad61bf4724 [ 998.394188] Code: 89 02 b8 ff ff ff ff eb bb 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 80 3d c5 e9 0c 00 00 74 13 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 89 54 24 1c 48 89 [ 998.394189] RSP: 002b:00007ffd7e2f7cb8 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 998.394191] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fad61bf4724 [ 998.394193] RDX: 0000000000000000 RSI: 00007ffd7e2f7d20 RDI: 0000000000000003 [ 998.394194] RBP: 00007ffd7e2f7d90 R08: 0000000000000010 R09: 000000000000003f [ 998.394195] R10: 000055df11558010 R11: 0000000000000202 R12: 00007ffd7e2 ---truncated---

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 22, 2026

Last Modified

October 19, 2026

Advisory Details (8)

Auto-updated Jun 6, 2026
Patch available.
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df3c95be76103604e752131d9495a24814915ece
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/95265232b49765a4d00f4d028c100bb7185600f4
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7c770dadfda5cbbde6aa3c4363ed513f1d212bf8
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/755a6300afbd743cda4b102f24f343380ec0e0ff
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5fdeaf591a0942772c2d18ff3563697a49ad01c6
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4c3e25a7b711a402fcbbbcfbbdf2868ece1ae7c8
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/43579baa17270aa51f93eb09b6e4af6e047b7f6e
Web page

net: openvswitch: Avoid releasing netdev before teardown completes - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/33609454be4f582e686a4bf13d4482a5ca0f6c4b

Vendor Advisories for CVE-2026-31508(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-10-27ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-10-27ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-10-27ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-10-27ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-10-27ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-10-27ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-10-27ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-10-27ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-10-27ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-10-27ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-10-27ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-10-27ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-10-27ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-10-27ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-10-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-10-27ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-10-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-10-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-10-27ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-10-27ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-10-27ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1106.104) @ jammy2026-10-27ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-10-27ubuntu
redhatkernel-0:5.14.0-570.120.1.el9_62026-06-11redhat
redhatkernel-0:5.14.0-687.15.1.el9_82026-06-11redhat
redhatkernel-0:5.14.0-427.130.1.el9_42026-06-10redhat
linuxKernel @ 5.10.253 (fixes >=0)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)
  • every version up to 5.10.257-1: fixed in 5.10.257-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)
  • every version up to 6.1.170-1~deb11u1: fixed in 6.1.170-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)
  • every version up to 6.1.170-1: fixed in 6.1.170-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)
  • every version up to 6.12.85-1: fixed in 6.12.85-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (125 versions)
  • every version up to 6.19.11-1: fixed in 6.19.11-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(21)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 54× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 315 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 220 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-27 18:24 UTCEG score recompute
  3. 2026-10-27 18:24 UTCVendor advisory
  4. 2026-10-27 18:24 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-10-25 14:36 UTCEG score recompute
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-19 19:37 UTCEG score recompute
  14. 2026-10-19 19:37 UTCVendor advisory
  15. 2026-10-19 19:36 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-19 19:01 UTCEG score recompute
  17. 2026-10-19 19:01 UTCVendor advisory
  18. 2026-10-19 19:00 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-10-18 03:48 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-10-16 17:06 UTCEG score recompute
  24. 2026-10-16 17:06 UTCVendor advisory
  25. 2026-10-16 17:05 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
Show 70 more
  1. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-16 15:39 UTCEG score recompute
  3. 2026-10-16 15:39 UTCVendor advisory
  4. 2026-10-16 15:38 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  6. 2026-10-15 02:37 UTCEG score recompute
  7. 2026-10-15 02:37 UTCVendor advisory
  8. 2026-10-15 02:36 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-15 01:39 UTCEG score recompute
  10. 2026-10-15 01:39 UTCVendor advisory
  11. 2026-10-15 01:39 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  12. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-12 16:15 UTCEG score recompute
  16. 2026-10-11 19:57 UTCEG score recompute
  17. 2026-10-11 17:10 UTCEG score recompute
  18. 2026-10-11 14:39 UTCEG score recompute
  19. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  26. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  27. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  28. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  29. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  30. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  31. 2026-09-28 00:49 UTCOSV refresh
  32. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  33. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  34. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  35. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  37. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  38. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  41. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  42. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  43. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  44. 2026-09-08 09:06 UTCEG score recompute
  45. 2026-09-08 09:06 UTCVendor advisory
  46. 2026-09-08 09:05 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8
  47. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  50. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-09-02 03:04 UTCOSV refresh
  52. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  53. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  55. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  57. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  58. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  59. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  60. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  61. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  62. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  63. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  65. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  66. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  67. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-08-16 05:59 UTCEG score recompute
  69. 2026-08-16 05:59 UTCVendor advisory
  70. 2026-08-16 05:59 UTCGHSA enrichmentGHSA-ccx4-p8v9-jp86 · GitHub severity HIGH · GitHub CVSS 7.8

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Frequently asked(5)

What is CVE-2026-31508?
CVE-2026-31508 is a high-severity vulnerability; its CVE record was published on April 22, 2026. In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Avoid releasing netdev before teardown completes The patch cited in the Fixes tag below changed the teardown code for OVS ports to no longer unconditionally take the RTNL. After this change, the netdevdestroy()…
When was the CVE record for CVE-2026-31508 published?
The CVE record for CVE-2026-31508 was published on April 22, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-31508 actively exploited?
CVE-2026-31508 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-31508?
CVE-2026-31508 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-31508?
A fix for CVE-2026-31508 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-31508 are linked in the Vendor Advisories panel on this page.

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