CVE-2026-23126

MEDIUMNVD 4.74.7
EchelonGraph scoreMEDIUM confidence

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

Score 4.7 from GitHub Security Advisory published 2026-02-14. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-5910 (ENISA EUVD) · GHSA-2wj2-8hhp-h6hm (GitHub Security Advisories)Source: ENISA EUVD

4.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 4.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

netdevsim: fix a race issue related to the operation on bpf_bound_progs list

The netdevsim driver lacks a protection mechanism for operations on the bpf_bound_progs list. When the nsim_bpf_create_prog() performs list_add_tail, it is possible that nsim_bpf_destroy_prog() is simultaneously performs list_del. Concurrent operations on the list may lead to list corruption and trigger a kernel crash as follows:

[ 417.290971] kernel BUG at lib/list_debug.c:62! [ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 417.291007] Workqueue: events bpf_prog_free_deferred [ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0 [ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8 [ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246 [ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000 [ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180 [ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003 [ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20 [ 417.291063] R13: ffff8e59f7b44780 R14: ffff8e58800b7a05 R15: 0000000000000000 [ 417.291074] FS: 0000000000000000(0000) GS:ffff8e59f7b00000(0000) knlGS:0000000000000000 [ 417.291079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 417.291083] CR2: 00007fc4083efe08 CR3: 00000001c3626006 CR4: 0000000000770ee0 [ 417.291088] PKRU: 55555554 [ 417.291091] Call Trace: [ 417.291096] [ 417.291103] nsim_bpf_destroy_prog+0x31/0x80 [netdevsim] [ 417.291154] __bpf_prog_offload_destroy+0x2a/0x80 [ 417.291163] bpf_prog_dev_bound_destroy+0x6f/0xb0 [ 417.291171] bpf_prog_free_deferred+0x18e/0x1a0 [ 417.291178] process_one_work+0x18a/0x3a0 [ 417.291188] worker_thread+0x27b/0x3a0 [ 417.291197] ? __pfx_worker_thread+0x10/0x10 [ 417.291207] kthread+0xe5/0x120 [ 417.291214] ? __pfx_kthread+0x10/0x10 [ 417.291221] ret_from_fork+0x31/0x50 [ 417.291230] ? __pfx_kthread+0x10/0x10 [ 417.291236] ret_from_fork_asm+0x1a/0x30 [ 417.291246]

Add a mutex lock, to prevent simultaneous addition and deletion operations on the list.

CVSS v3
4.7
EG Score
4.7MEDIUMmedium confidence
EG Risk
21
EG Risk 21/100

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)
Severity47% × 45%
Impact severity (EG Severity): CVSS 4.7 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
below the 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 (4.7): severity, escalated by confirmed exploitation. This CVE's 4.7 is its impact severity (EG Severity), not escalated.

EG Severity
4.7 MEDIUMCVSS-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. 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

February 14, 2026

Last Modified

October 19, 2026

Advisory Details (5)

Auto-updated Aug 9, 2026
Patch available.
Web page

netdevsim: fix a race issue related to the operation on bpf_bound_progs list - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa
Web page

netdevsim: fix a race issue related to the operation on bpf_bound_progs list - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db
Web page

netdevsim: fix a race issue related to the operation on bpf_bound_progs list - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15
Web page

netdevsim: fix a race issue related to the operation on bpf_bound_progs list - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b
Web page

netdevsim: fix a race issue related to the operation on bpf_bound_progs list - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d

Vendor Advisories for CVE-2026-23126(1)

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

Patch Availability(16)

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (46 versions)
  • every version up to 6.1.162-1: fixed in 6.1.162-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.69-1~bpo12+1 (10 versions)
  • every version up to 6.12.69-1: fixed in 6.12.69-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (97 versions)
  • every version up to 6.18.8-1: fixed in 6.18.8-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(15)

Data Freshness Timeline

(refreshed 6× in last 7d / 35× 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 98 of 184 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 86 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-28 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-28 12:25 UTCOSV refresh
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-25 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-10-25 14:41 UTCEG score recompute
  9. 2026-10-24 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-10-20 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-10-19 19:37 UTCVendor advisory
  12. 2026-10-19 19:37 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  13. 2026-10-19 18:30 UTCEG score recompute
  14. 2026-10-19 18:30 UTCVendor advisory
  15. 2026-10-19 18:30 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-10-18 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-10-18 03:55 UTCEG score recompute
  19. 2026-10-17 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-10-16 16:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  21. 2026-10-14 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  22. 2026-10-13 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-10-12 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-10-12 16:21 UTCEG score recompute
  25. 2026-10-11 20:03 UTCEG score recompute
Show 73 more
  1. 2026-10-11 17:16 UTCEG score recompute
  2. 2026-10-11 14:48 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-10-08 17:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-08 15:35 UTCOSV refresh
  8. 2026-10-07 23:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-10-06 15:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-10-04 23:21 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-10-01 19:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-09-30 15:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-09-29 15:21 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-09-28 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-27 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-26 15:58 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-26 00:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-09-24 14:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-18 21:36 UTCOSV refresh
  21. 2026-09-18 19:27 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  22. 2026-09-16 14:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-13 16:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-12 15:01 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-09-11 14:52 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  26. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  27. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  28. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  29. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  30. 2026-09-02 14:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  31. 2026-09-01 13:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  32. 2026-08-31 00:23 UTCOSV refresh
  33. 2026-08-28 21:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  34. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  35. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  36. 2026-08-25 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  38. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  39. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  40. 2026-08-16 14:56 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  41. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  43. 2026-08-14 10:05 UTCVendor advisory
  44. 2026-08-14 10:05 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  45. 2026-08-13 02:23 UTCEG score recompute
  46. 2026-08-13 02:23 UTCVendor advisory
  47. 2026-08-13 02:23 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  48. 2026-08-12 13:50 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  49. 2026-08-11 07:55 UTCEG score recompute
  50. 2026-08-11 07:55 UTCVendor advisory
  51. 2026-08-11 07:55 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  52. 2026-08-11 00:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  53. 2026-08-09 14:39 UTCEG score recompute
  54. 2026-08-09 14:39 UTCVendor advisory
  55. 2026-08-09 14:39 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  56. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  57. 2026-08-07 21:56 UTCEG score recompute
  58. 2026-08-07 21:56 UTCVendor advisory
  59. 2026-08-07 21:56 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  60. 2026-08-06 03:48 UTCEG score recompute
  61. 2026-08-06 03:48 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  62. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  64. 2026-08-04 10:38 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  65. 2026-08-02 20:37 UTCEG score recompute
  66. 2026-08-02 20:37 UTCVendor advisory
  67. 2026-08-02 20:37 UTCGHSA enrichmentGHSA-2wj2-8hhp-h6hm · GitHub CVSS 4.7
  68. 2026-08-02 02:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  69. 2026-08-01 04:15 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  70. 2026-07-27 14:13 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  71. 2026-07-26 14:54 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  72. 2026-07-24 14:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  73. 2026-07-23 14:18 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile

Frequently asked(5)

What is CVE-2026-23126?
CVE-2026-23126 is a medium-severity vulnerability; its CVE record was published on February 14, 2026. In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix a race issue related to the operation on bpf_bound_progs list The netdevsim driver lacks a protection mechanism for operations on the bpf_bound_progs list. When the nsim_bpf_create_prog() performs list_add_tail, it…
When was the CVE record for CVE-2026-23126 published?
The CVE record for CVE-2026-23126 was published on February 14, 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-2026-23126 actively exploited?
CVE-2026-23126 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-23126?
CVE-2026-23126 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-23126?
A fix for CVE-2026-23126 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-23126 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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