PT-2026-37533 · Git+2 · Kernel+95

Claude · CVE-2026-43193 · Published 2026-05-06 · Updated 2026-05-11

Positive Technologies (AI Summary)

CVSS v4.0

7.1

High

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A reference count leak occurs in the nfsd get dir deleg() function within the nfsd component. Specifically, the reference to the fp variable is not properly released before the function returns.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2026-43193

Affected Products

Kernel

Linux

Linux-Allwinner-5.19

Linux-Aws-5.0

Linux-Aws-5.11

Linux-Aws-5.13

Linux-Aws-5.19

Linux-Aws-5.3

Linux-Aws-5.8

Linux-Aws-6.14

Linux-Aws-6.2

Linux-Aws-6.5

Linux-Azure

Linux-Azure-5.11

Linux-Azure-5.13

Linux-Azure-5.19

Linux-Azure-5.3

Linux-Azure-5.8

Linux-Azure-6.11

Linux-Azure-6.2

Linux-Azure-6.5

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

Linux-Azure-Fde-6.2

Linux-Bluefield

Linux-Gcp

Linux-Gcp-5.11

Linux-Gcp-5.13

Linux-Gcp-5.19

Linux-Gcp-5.3

Linux-Gcp-5.8

Linux-Gcp-6.11

Linux-Gcp-6.14

Linux-Gcp-6.2

Linux-Gcp-6.5

Linux-Gke

Linux-Gke-4.15

Linux-Gkeop-5.15

Linux-Gke-5.4

Linux-Gkeop

Linux-Hwe

Linux-Hwe-5.11

Linux-Hwe-5.13

Linux-Hwe-5.19

Linux-Hwe-5.8

Linux-Hwe-6.11

Linux-Hwe-6.14

Linux-Hwe-6.2

Linux-Hwe-6.5

Linux-Hwe-Edge

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency-Hwe-5.19

Linux-Lowlatency-Hwe-6.11

Linux-Lowlatency-Hwe-6.2

Linux-Lowlatency-Hwe-6.5

Linux-Nvidia

Linux-Nvidia-6.11

Linux-Nvidia-6.2

Linux-Nvidia-6.5

Linux-Nvidia-7.0

Linux-Nvidia-Bos

Linux-Oem

Linux-Oem-5.10

Linux-Oem-5.13

Linux-Oem-5.14

Linux-Oem-5.17

Linux-Oem-5.6

Linux-Oem-6.0

Linux-Oem-6.1

Linux-Oem-6.11

Linux-Oem-6.14

Linux-Oem-6.5

Linux-Oem-6.8

Linux-Oracle-5.0

Linux-Oracle-5.11

Linux-Oracle-5.13

Linux-Oracle-5.3

Linux-Oracle-5.8

Linux-Oracle-6.14

Linux-Oracle-6.5

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Realtime-6.14

Linux-Riscv

Linux-Riscv-5.11

Linux-Riscv-5.19

Linux-Riscv-5.8

Linux-Riscv-6.14

Linux-Riscv-6.5

Linux-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux Kernel

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43193.json · Exploit
• https://ubuntu.com/security/CVE-2026-43193 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43193 · Security Note
• https://osv.dev/vulnerability/CVE-2026-43193 · Vendor Advisory
• https://git.kernel.org/stable/c/789477b849394afdb60507924d65f7ef18f078ce · Patch
• https://git.kernel.org/stable/c/0d8362e15aad5b5c1d6a65bb23ac6c45ccf881f3 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43193 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43193 · Security Note
• https://t.me/cveNotify/163096 · Telegram Post
• https://git.kernel.org/linus/789477b849394afdb60507924d65f7ef18f078ce · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note