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Vulnerability · Published Sep 17, 2026 · Assigned by Linux

CVE-2026-90300bpf: Clear buf on error in __bpf_get_task_stack

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 89.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in __bpf_get_task_stack Both bpf_get_task_stack and bpf_get_task_stack_sleepable helpers that use __bpf_get_task_stack have buf defined as ARG_PTR_TO_UNINIT_MEM argument and we should initialize the buf on every return path. Adding missing buf memset for __bpf_get_task_stack fail paths. This provides deterministic buffer contents, which is useful when the buffer is used directly as a map key.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-90300
Debian:13linux6.12.115-2DEBIAN-CVE-2026-90300
Debian:14linux7.2.6-1DEBIAN-CVE-2026-90300
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-90300
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-90300
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-90300
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-90300

Affected products (as reported)

VendorProductVersions
Linux Linux 06ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before 5c4c57a277a87ed235183d03b671d346f5101f6206ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before 4acc761b4e3feca1eb648d21fc4d665b23c5372d06ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before 6f5a7bcc049709af12e403111d5e73e80910dafc06ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before 1f0f61573ba4cb899105b5cef65be3ca02205f9306ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before f523359c4789bb0396d2d642464a6e2fd4f2299d06ab134ce8ecfa5a69e850f88f81c8a4c3fa91df – before f5d242825ca417bb6afe35fde6e8880f97ca43fbd921baabd96445ef9c9c9410ca06164359c8a1a59c020a533eaae1c2d41a7e3835c4c818a9b4b656
Linux Linux 5.12

References