CVE-2026-23110

unknownknown exploitedcovered by 7 sourcesfirst seen 2026-07-20

Actively exploited. CVE-2026-23110 is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Foo-over-UDP (FOU); - ARM64 architecture; - x86 architecture; - Block layer subsystem; - Drivers core; - Null block device driver; - Bluetooth drivers; - Counter interface drivers; - DMA engine subsystem; - DPLL subsystem; - GPIO subsystem; - GPU drivers; - I2C subsystem; - IIO ADC drivers; - IIO subsystem; - On-Chip Interconnect management framework; - IOMMU subsystem; - IRQ chip drivers; - Modular ISDN driver; - LED subsystem; - Multiple devices driver; - UACCE accelerator framework; - MMC subsystem; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - NVME drivers; - Device tree and open firmware driver; - PHY drivers; - x86 platform drivers; - i.MX PM domains; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - TTY drivers; - USB Host Controller drivers; - W1 Dallas's 1-wire bus driver; - Xen hypervisor drivers; - BTRFS file system; - EFI Variable file system; - Ext4 file system; - File systems infrastructure; - FUSE (File system in Userspace); - Network file systems library; - Network file system (NFS) client; - Network file system (NFS) server daemon; - SMB network file system; - Memory Management; - Memory management; - Scheduler infrastructure; - Tracing infrastructure; - Netfilter; - NFC subsystem; - io_uring subsystem; - Perf events; - Hibernation control; - Timer subsystem; - BPF subsystem; - Floating proportions library; - Bluetooth subsystem; - CAN network layer; - Ceph Core library; - Networking core; - IPv4 networking; - IPv6 networking; - L2TP protocol; - MAC80211 subsystem; - Multipath TCP; - NET/ROM layer; - RxRPC session sockets; - Network traffic control; - SCTP protocol; - VMware vSockets driver; - Wireless networking; - ALSA AC97 driver; - Creative Sound Blaster X-Fi driver; - Texas InstrumentS Audio (ASoC/HDA) drivers; - USB sound devices

CSIRTS triage

What: Multiple security issues were discovered in the Linux kernel that could compromise the system.
Who is affected: Users of the Linux kernel are potentially affected.
Urgency: Remediation is necessary, but severity is currently unknown.
Action: Update the Linux kernel to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 1% of all EPSS-scored CVEs.

Advisory coverage (7)

unknownexploitedSiemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFPcisa · 2026-07-28
unknownUSN-8570-2: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-07-28
unknownUSN-8605-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu · 2026-07-24
unknownUSN-8604-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-07-24
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 24, 2026)cert-fr-avis · 2026-07-24
unknownUSN-8594-1: Linux kernel (OEM) vulnerabilitiesubuntu · 2026-07-23
unknownUSN-8570-1: Linux kernel vulnerabilitiesubuntu · 2026-07-20

External references

NVD record for CVE-2026-23110

CVE.org record

CISA KEV catalog

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