CVE-2026-31551

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

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

Score 5.5 from GitHub Security Advisory (severity: MODERATE) published 2026-04-24. NVD baseline CVSS 5.5; sources differ by 0.0.

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

Also known asEUVD-2026-25444 (ENISA EUVD) · GHSA-gmmg-2vvm-27c6 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
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: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable.

syzbot reported static_branch_dec() underflow in aql_enable_write(). [0]

The problem is that aql_enable_write() does not serialise concurrent write()s to the debugfs.

aql_enable_write() checks static_key_false(&aql_disable.key) and later calls static_branch_inc() or static_branch_dec(), but the state may change between the two calls.

aql_disable does not need to track inc/dec.

Let's use static_branch_enable() and static_branch_disable().

[0]: val == 0 WARNING: kernel/jump_label.c:311 at __static_key_slow_dec_cpuslocked.part.0+0x107/0x120 kernel/jump_label.c:311, CPU#0: syz.1.3155/20288 Modules linked in: CPU: 0 UID: 0 PID: 20288 Comm: syz.1.3155 Tainted: G U L syzkaller #0 PREEMPT(full) Tainted: [U]=USER, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:__static_key_slow_dec_cpuslocked.part.0+0x107/0x120 kernel/jump_label.c:311 Code: f2 c9 ff 5b 5d c3 cc cc cc cc e8 54 f2 c9 ff 48 89 df e8 ac f9 ff ff eb ad e8 45 f2 c9 ff 90 0f 0b 90 eb a2 e8 3a f2 c9 ff 90 <0f> 0b 90 eb 97 48 89 df e8 5c 4b 33 00 e9 36 ff ff ff 0f 1f 80 00 RSP: 0018:ffffc9000b9f7c10 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffffff9b3e5d40 RCX: ffffffff823c57b4 RDX: ffff8880285a0000 RSI: ffffffff823c5846 RDI: ffff8880285a0000 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000a R13: 1ffff9200173ef88 R14: 0000000000000001 R15: ffffc9000b9f7e98 FS: 00007f530dd726c0(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001140 CR3: 000000007cc4a000 CR4: 00000000003526f0 Call Trace: __static_key_slow_dec_cpuslocked kernel/jump_label.c:297 [inline] __static_key_slow_dec kernel/jump_label.c:321 [inline] static_key_slow_dec+0x7c/0xc0 kernel/jump_label.c:336 aql_enable_write+0x2b2/0x310 net/mac80211/debugfs.c:343 short_proxy_write+0x133/0x1a0 fs/debugfs/file.c:383 vfs_write+0x2aa/0x1070 fs/read_write.c:684 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __x64_sys_pwrite64+0x1eb/0x250 fs/read_write.c:798 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f530cf9aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f530dd72028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f530d215fa0 RCX: 00007f530cf9aeb9 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000010 RBP: 00007f530d008c1f R08: 0000000000000000 R09: 0000000000000000 R10: 4200000000000005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f530d216038 R14: 00007f530d215fa0 R15: 00007ffde89fb978

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 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
2nd
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 (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 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 (model v2026.06.15, score date 2026-11-11). 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

April 24, 2026

Last Modified

November 11, 2026

Advisory Details (7)

Auto-updated Aug 2, 2026
Patch available.
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b94ae8e0d5fe1bdbbfdc3854ff6ce98f6876a828
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b24763d32d5b4ada766deca4b42d6766272fef0c
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8bb90ff77326c34e75b573b1febdd9586fec5aba
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/787152497ac763deab16f6f4b7ce79aaeb3eb7e8
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5ba05436f15d16ae7ab04b880e8bf8d440be892b
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/29a1a350afcd28a2150bd73b8bd83eac3480f13e
Web page

wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/256f7d4c11235d0569f78413c41dc89d2dc1557c

Vendor Advisories for CVE-2026-31551(1)

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

Patch Availability(28)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-11-11ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-11-11ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-11-11ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-11-11ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-11-11ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-11-11ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-11-11ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-11-11ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-11-11ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-11-11ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-11-11ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-11-11ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-11-11ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-11-11ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-11-11ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-11-11ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-11-11ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-11-11ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1106.104) @ jammy2026-11-11ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-11-11ubuntu
linuxKernel @ 5.15.203 (fixes >=5.12.0)—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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
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 (126 versions)
  • every version up to 6.19.10-1: fixed in 6.19.10-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

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 8× in last 7d / 38× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 284 rows on record for this CVE, as 95 entries (5 repeats merged).

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 184 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-11-11 23:38 UTCEchelonGraph re-scored
  4. 2026-11-11 23:38 UTCVendor advisory
  5. 2026-11-11 23:37 UTCGHSA enrichmentGHSA-gmmg-2vvm-27c6 · GitHub severity MODERATE · GitHub CVSS 5.5
  6. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
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  10. 2026-11-06 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-11-05 22:30 UTCVendor advisory
  12. 2026-11-05 22:30 UTCGHSA enrichmentGHSA-gmmg-2vvm-27c6 · GitHub severity MODERATE · GitHub CVSS 5.5
  13. 2026-11-05 21:53 UTCEchelonGraph re-scored
  14. 2026-11-05 21:53 UTCVendor advisory
  15. 2026-11-05 21:53 UTCGHSA enrichmentGHSA-gmmg-2vvm-27c6 · GitHub severity MODERATE · GitHub CVSS 5.5
  16. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-11-03 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  21. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-30 22:55 UTCOSV refresh
  23. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 70 more
  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-25 14:36 UTCEchelonGraph re-scored
  5. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-23 03:51 UTCEchelonGraph re-scored
  8. 2026-10-23 03:51 UTCVendor advisory
  9. 2026-10-23 03:51 UTCGHSA enrichmentGHSA-gmmg-2vvm-27c6 · GitHub CVSS 5.5
  10. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-18 03:48 UTCEchelonGraph re-scored
  16. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-13 22:24 UTCOSV refresh
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-10-12 16:15 UTCEchelonGraph re-scored
  24. 2026-10-11 19:57 UTCEchelonGraph re-scored
  25. 2026-10-11 17:10 UTCEchelonGraph re-scored
  26. 2026-10-11 14:39 UTCEchelonGraph re-scored
  27. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  28. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  29. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  30. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  31. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  32. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  33. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  34. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  35. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  36. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  37. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  38. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  39. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  40. 2026-09-23 08:23 UTCOSV refresh
  41. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  47. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  52. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  53. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-09-04 03:16 UTCOSV refresh
  55. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  56. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  57. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  60. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  61. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
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  65. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  67. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  69. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  70. 2026-08-17 14:52 UTCEchelonGraph re-scored

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-31551?
CVE-2026-31551 is a medium-severity vulnerability; its CVE record was published on April 24, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. syzbot reported static_branch_dec() underflow in aql_enable_write(). [0] The problem is that aql_enable_write() does not serialise concurrent write()s to the…
When was the CVE record for CVE-2026-31551 published?
The CVE record for CVE-2026-31551 was published on April 24, 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 November 11, 2026; the record at its source may have been updated since.
Is CVE-2026-31551 actively exploited?
CVE-2026-31551 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-31551?
CVE-2026-31551 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31551?
A fix for CVE-2026-31551 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-31551 are linked in the Vendor Advisories panel on this page.

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