CISA KEV High
Access control exploit reference
CVE-2026-31431 — Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.
72
Urgent
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- Confirmed exploitation (CISA KEV)+35
- Public exploit/PoC (metasploit, github)+18
- EPSS 3.4% (30-day exploitation probability)+13
- Technical severity (high)+6
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
Exploitation
Confirmed
CISA KEV, listed May 1, 2026
EPSS FIRST
3.44%
ahead of 89% of scored CVEs · Oct 14, 2026
Affects
Amazon
Amazon Linux and 48 more
CVSS base
7.8
High · 4 source(s)
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Exploitation
Active
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — git.kernel.org (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — www.openwall.com (NIST National Vulnerability Database)
- Documented patch — xint.io (NIST National Vulnerability Database)
CISA required action CISA
"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
US federal deadline: May 15, 2026 — passed 153 day(s) ago
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Amazon Amazon Linux, Arista Cloudvision Agni, Arista Cloudvision Portal…).
- Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
- Apply the fixed version or the patch documented under Remediation.
- Search available logs for exploit probes matching the vulnerability class (access control), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Amazon | Amazon Linux | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Arista | Cloudvision Agni | ≥ 2024.4.0 and ≤ 2025.2.2 | Vulnerable | NIST National Vulnerability Database |
| Arista | Cloudvision Portal | ≥ 2024.2.0 and ≤ 2026.1.0 | Vulnerable | NIST National Vulnerability Database |
| Arista | Netvisor Os | < 7.1.0version 7.1.0version 7.1.0-hotfix7 | Vulnerable | NIST National Vulnerability Database |
| Arista | Velocloud Edge | ≥ 4.5.0 and ≤ 6.4.1 | Vulnerable | NIST National Vulnerability Database |
| Arista | Velocloud Gateway | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Arista | Velocloud Orchestrator | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Canonical | Ubuntu Linux | versions not specified by the sourceversion 14.04version 16.04version 18.04version 20.04version 22.04version 24.04version 25.10 | Vulnerable | NIST National Vulnerability Database |
| Debian | Debian Linux | version 11.0version 12.0version 13.0 | Vulnerable | NIST National Vulnerability Database |
| Linux | Linux |
≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < 893d22e0135fa394db81df88697fba6032747667≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < 19d43105a97be0810edbda875f2cd03f30dc130c≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < 961cfa271a918ad4ae452420e7c303149002875b≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < 3115af9644c342b356f3f07a4dd1c8905cd9a6fc≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < 8b88d99341f139e23bdeb1027a2a3ae10d341d82≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < ce42ee423e58dffa5ec03524054c9d8bfd4f6237≥ 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 and < a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 and 1 moreversion 4.14 |
Vulnerable | CVE Program (cve.org) e CISA ADP |
| Linux | Linux Kernel |
≥ 4.14 and < 5.10.254≥ 5.11 and < 5.15.204≥ 5.16 and < 6.1.170≥ 6.2 and < 6.6.137≥ 6.7 and < 6.12.85≥ 6.13 and < 6.18.22≥ 6.19 and < 6.19.12version 7.0-rc1 and 5 moreversion 7.0-rc2version 7.0-rc3version 7.0-rc4version 7.0-rc5version 7.0-rc6 |
Vulnerable | NIST National Vulnerability Database |
| Nixos | Nixos | < 25.11 | Vulnerable | NIST National Vulnerability Database |
| Opensuse | Leap | version 15.6version 15.3version 15.4version 15.5 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Enterprise Linux | version 8.0version 9.0version 10.0 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Enterprise Linux Aus | version 8.4version 8.6 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Enterprise Linux Eus | version 8.4version 9.4version 9.6version 10.0 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Enterprise Linux Tus | version 8.6version 8.8 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Enterprise Linux Update Services For Sap Solutions | version 8.6version 8.8version 9.0version 9.2 | Vulnerable | NIST National Vulnerability Database |
| Red Hat | Openshift Container Platform |
≥ 4.12 and < 4.12.89≥ 4.13 and < 4.13.66≥ 4.14 and < 4.14.65≥ 4.15 and < 4.15.64≥ 4.16 and < 4.16.61≥ 4.17 and < 4.17.53≥ 4.18 and < 4.18.40≥ 4.19 and < 4.19.30 and 3 more≥ 4.20 and < 4.20.21≥ 4.21 and < 4.21.14version 4.0 |
Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic Ax Runtime | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic Cn 4100 Firmware | < 6.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic Hmi Unified Comfort Panels Firmware | < 21.0version 21.0version 21.0-update_1version 21.0-update_2 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic Iot2050 Advanced Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic Ipc Ied-os | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic S7-1500 Cpu 1518-4 Pn/dp Mfp Firmware | ≥ 3.1.5 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic S7-1500 Cpu 1518f-4 Pn/dp Mfp Firmware | ≥ 3.1.5 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Simatic S7-1500 Tm Mfp Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Siplus S7-1500 Cpu 1518-4 Pn/dp Mfp Firmware | ≥ 3.1.5 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Basesystem Module | version 15-sp3version 15-sp7version 15-sp6version 15-sp5version 15-sp4version 15-sp2version 15-sp1 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Caas Platform | version 4.0 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Development Tools Module | version 15-sp6version 15-sp7version 15-sp5version 15-sp1version 15-sp2version 15-sp3version 15-sp4 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Enterprise Storage | version 6.0version 7.0version 7.1 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Legacy Module | version 15-sp7 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Desktop |
version 11-sp4version 12-sp4version 15-sp1version 15-sp2version 15-sp3version 15-sp4version 15-sp5version 15-sp6 and 1 moreversion 15-sp7 |
Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise High Availability Extension | version 15-sp4version 15-sp6version 15-sp7version 16.0 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise High Performance Computing | version 15.0-sp2version 15.0-sp1version 15.0-sp7version 15.0-sp6version 15.0-sp5version 15.0-sp3version 15.0-sp4 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Live Patching | version 15-sp7version 12-sp5version 15-sp4version 15-sp5version 15-sp6 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Micro | version 5.0version 5.5version 5.1version 5.2version 5.3version 5.4 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Real Time | version 15.0-sp2version 15.0-sp3version 15.0-sp4version 15.0-sp5version 15.0-sp6version 15.0-sp7 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Server |
version 11-sp4version 12-sp4version 12-sp5version 15-sp1version 15-sp2version 15-sp3version 15-sp4version 15-sp5 and 4 moreversion 15-sp6version 15-sp7version 16.0version 16.1 |
Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Enterprise Workstation Extension | version 15-sp7 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Linux Micro | version 6.2version 6.0version 6.1 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Manager Proxy | version 4.0version 4.1version 4.2version 4.3 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Manager Retail Branch Server | version 4.1version 4.0version 4.2version 4.3 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Manager Server | version 4.0version 4.1version 4.2version 4.3 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Openstack Cloud | version 9.0 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Openstack Cloud Crowbar | version 9.0 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Public Cloud Module | version 15-sp7version 15-sp6 | Vulnerable | NIST National Vulnerability Database |
| SUSE | Realtime Module | version 15-sp7version 15-sp3version 15-sp4version 15-sp5version 15-sp6 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 7.8 | CVSS 3.1 | High | 1.8 | 5.9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database |
| 7.8 | CVSS 3.1 | High | 1.8 | 5.9 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c via NIST National Vulnerability Database |
| 7.8 | CVSS 3.1 | High | — | — | GitHub, Inc. via GitHub Security Advisories |
| 7.8 | CVSS 3.1 | High | — | — | Linux via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
CISA KEV details CISA
CISA lists a CVE once it has evidence of exploitation against real targets.
Listed
May 1, 2026
Federal deadline
May 15, 2026
passed 153 day(s) ago
Ransomware use
Unknown
CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.
Public exploits, PoCs and detection templates
Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.
Metasploit modules
- Copy Fail AF_ALG + authencesn Page-Cache Write excellent Apr 29, 2026
Proofs of concept on GitHub — 325 repositories; showing the 10 most starred
- Copy Fail (CVE-2026-31431): 9-year-old Linux kernel LPE found by Theori's Xint Code ★ 4074 Apr 29, 2026
- Cross-platform C port of the Copy Fail Linux LPE (CVE-2026-31431). Disclosed 2026-04-29 by Theori / Xint. ★ 447 Apr 29, 2026
- A Go implementation of copyfail (CVE-2026-31431) ★ 359 Apr 29, 2026
- PoC: fully unprivileged container escape to node-level code execution on Kubernetes via CVE-2026-31431 page-cache corruption + shared image layers. Validated on Alibaba Cloud ACK, Amazon EKS and Google GKE. ★ 192 Apr 30, 2026
- CVE-2026-31431 纯文件利用 ★ 113 Apr 30, 2026
- Most Linux LPEs need a race window or a kernel-specific offset. Copy Fail is a straight-line logic flaw, it needs neither. The same 732-byte Python script (or .c elf) roots every Linux distribution shipped since 2017. ★ 109 Apr 29, 2026
- CVE-2026-31431-killed page-cache exploit — code exec into containers sharing the same image layer ★ 77 May 6, 2026
- Minimal no-libc Linux x86_64 ELF PoC build for Copy Fail (CVE-2026-31431) ★ 63 Apr 30, 2026
- CVE-2026-31431 Copy Fail — Universal LPE exploit. Dynamic ELF offset + full-binary overwrite, Python 2/3 compatible with ctypes splice fallback ★ 59 Apr 30, 2026
- Rust implementation Exploit/PoC of CVE-2026-31431-Linux-Copy-Fail, allow executing customized shellcode (such as Meterpreter). ★ 56 Apr 30, 2026
Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.
EPSS over time FIRST
Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 3.44%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
- Audit administrative actions and access to resources outside each user’s normal pattern.
- Hunt retroactively in logs from before May 1, 2026 (KEV listing): exploitation may have started earlier.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · linux/linux
- SSVC assessment updated
- Record published
- Fix documented
- Affected products added · linux/linux kernel, redhat/openshift container platform, redhat/enterprise linux, redhat/enterprise linux aus, redhat/en
- CVSS changed · 7.8
- Source status changed · → Analyzed
- Added to CISA KEV (detected)
- Record created in this database
- Added to CISA KEV catalog
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 13, 2026 – Oct 13, 2026
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
100 on the record
- lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/
- git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5
- www.openwall.com/lists/oss-security/2026/04/29/23
- git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237
- www.openwall.com/lists/oss-security/2026/04/30/14
- www.openwall.com/lists/oss-security/2026/04/30/5
- git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8
- git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667
- xint.io/blog/copy-fail-linux-distributions
- www.openwall.com/lists/oss-security/2026/04/29/26
- www.openwall.com/lists/oss-security/2026/04/30/10
- git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82
- git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875b
- git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fc
- www.openwall.com/lists/oss-security/2026/04/30/15
- www.openwall.com/lists/oss-security/2026/04/30/11
- www.openwall.com/lists/oss-security/2026/04/29/25
- www.openwall.com/lists/oss-security/2026/04/30/16
- www.openwall.com/lists/oss-security/2026/04/30/12
- git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130c
- www.cisa.gov/known-exploited-vulnerabilities-catalog
- www.openwall.com/lists/oss-security/2026/05/01/24
- www.openwall.com/lists/oss-security/2026/05/03/10
- access.redhat.com/errata/RHSA-2026:16063
- access.redhat.com/errata/RHSA-2026:19074
- access.redhat.com/errata/RHSA-2026:14773
- access.redhat.com/errata/RHSA-2026:14137
- www.openwall.com/lists/oss-security/2026/05/01/12
- www.openwall.com/lists/oss-security/2026/05/02/7
- www.openwall.com/lists/oss-security/2026/05/02/14
- access.redhat.com/errata/RHSA-2026:19225
- access.redhat.com/security/cve/cve-2026-31431
- www.openwall.com/lists/oss-security/2026/05/02/19
- www.openwall.com/lists/oss-security/2026/04/30/17
- access.redhat.com/errata/RHSA-2026:14165
- www.openwall.com/lists/oss-security/2026/05/01/15
- www.openwall.com/lists/oss-security/2026/05/02/20
- access.redhat.com/errata/RHSA-2026:13936
- www.openwall.com/lists/oss-security/2026/05/02/4
- access.redhat.com/errata/RHSA-2026:16111
- www.openwall.com/lists/oss-security/2026/05/02/23
- www.openwall.com/lists/oss-security/2026/05/02/24
- access.redhat.com/errata/RHSA-2026:14230
- www.openwall.com/lists/oss-security/2026/05/04/2
- lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh
- access.redhat.com/errata/RHSA-2026:13566
- github.com/advisories/GHSA-2274-3hgr-wxv6
- access.redhat.com/errata/RHSA-2026:15087
- cert-portal.siemens.com/productcert/html/ssa-082556.html
- access.redhat.com/errata/RHSA-2026:13690
- access.redhat.com/errata/RHSA-2026:14097
- access.redhat.com/errata/RHSA-2026:13734
- access.redhat.com/errata/RHSA-2026:14339
- www.openwall.com/lists/oss-security/2026/05/01/18
- access.redhat.com/errata/RHSA-2026:14112
- access.redhat.com/errata/RHSA-2026:13577
- www.openwall.com/lists/oss-security/2026/05/01/3
- www.openwall.com/lists/oss-security/2026/04/30/2
- access.redhat.com/errata/RHSA-2026:13729
- www.openwall.com/lists/oss-security/2026/05/04/29
- www.openwall.com/lists/oss-security/2026/05/02/15
- access.redhat.com/errata/RHSA-2026:16018
- www.openwall.com/lists/oss-security/2026/05/04/31
- access.redhat.com/errata/RHSA-2026:33486
- www.openwall.com/lists/oss-security/2026/05/03/3
- cert-portal.siemens.com/productcert/html/ssa-328642.html
- www.openwall.com/lists/oss-security/2026/05/01/2
- access.redhat.com/errata/RHSA-2026:13932
- access.redhat.com/errata/RHSA-2026:13727
- www.openwall.com/lists/oss-security/2026/05/02/17
- www.openwall.com/lists/oss-security/2026/04/30/18
- bugzilla.redhat.com/show_bug.cgi
- access.redhat.com/errata/RHSA-2026:16208
- www.openwall.com/lists/oss-security/2026/05/01/23
- www.openwall.com/lists/oss-security/2026/05/04/12
- copy.fail
- websec.net/blog/cve-2026-31431-linux-algifaead-page-cache-write-to-root-69f38a4c
- access.redhat.com/errata/RHSA-2026:14301
- www.openwall.com/lists/oss-security/2026/05/02/16
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- www.openwall.com/lists/oss-security/2026/05/02/6
- github.com/theori-io/copy-fail-CVE-2026-31431
- nvd.nist.gov/vuln/detail/CVE-2026-31431
- www.openwall.com/lists/oss-security/2026/05/03/6
- www.openwall.com/lists/oss-security/2026/05/18/3
- access.redhat.com/errata/RHSA-2026:15978
- www.openwall.com/lists/oss-security/2026/05/01/16
- www.openwall.com/lists/oss-security/2026/05/02/18
- www.kb.cert.org/vuls/id/260001
- www.openwall.com/lists/oss-security/2026/05/04/10
- access.redhat.com/errata/RHSA-2026:14926
- www.openwall.com/lists/oss-security/2026/05/04/11
- www.openwall.com/lists/oss-security/2026/05/07/2
- access.redhat.com/errata/RHSA-2026:13811
- access.redhat.com/errata/RHSA-2026:16210
- www.openwall.com/lists/oss-security/2026/05/01/17
- www.openwall.com/lists/oss-security/2026/05/02/8
- www.openwall.com/lists/oss-security/2026/05/04/9
- www.openwall.com/lists/oss-security/2026/04/30/6
- access.redhat.com/errata/RHSA-2026:15976
Elsewhere on this site
Related CVEs (same products)
- Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 4h
- Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 4h
- Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
- Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
- Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
- Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-31431 is "Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability", rated High. It affects Amazon Linux (Amazon); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 7.8 describes technical severity. EPSS 3.44% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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