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Vulnerability · Published Oct 23, 2026 · Assigned by Linux

CVE-2026-98967cxgb4/ch_ktls: disable softirqs around tid_list erases

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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 91.8% 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: cxgb4/ch_ktls: disable softirqs around tid_list erases chcr_ktls_cpl_act_open_rpl() inserts into tid_list from the receive path using xa_insert_bh(). The array is shared by the adapter's connections and initialized with XA_FLAGS_LOCK_BH. However, chcr_ktls_dev_del() and the chcr_ktls_dev_add() error path use xa_erase(), which takes the XArray lock without disabling softirqs. When cleanup runs with softirqs enabled, a receive softirq for another connection on the same CPU can interrupt the erase and spin on the lock held by the interrupted task. Use xa_erase_bh() at both sites to match the insertion path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98967
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98967
Debian:14linux7.2.11-1DEBIAN-CVE-2026-98967
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux7.3.0-10.10UBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-aws7.3.0-1004.4UBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-azureno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-gcp7.3.0-1004.4UBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-oracle7.3.0-1004.4UBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-raspi7.3.0-1004.4UBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-realtime7.3.0-10.10.1UBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98967
Ubuntu:26.10linux-riscv7.3.0-10.10.1UBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98967
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98967
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98967

Affected products (as reported)

VendorProductVersions
Linux Linux b96adbf6601d76ee0bdd9bfa5bcdd0cdd5333d78 – before 2c49ea1dd16d6dc0dd895e6aec57c9a448191cfe65e302a9bd57b62872040d57eea1201562a7cbb2 – before bafe51bb145e6ae549ae79dcbc3564829262593465e302a9bd57b62872040d57eea1201562a7cbb2 – before 0c5063a898813a420e6bad93debd134ef8b3bfd165e302a9bd57b62872040d57eea1201562a7cbb2 – before 8739f06e3f82cd715f7dd10ab24029ed881efc9065e302a9bd57b62872040d57eea1201562a7cbb2 – before bcf97573d44e277b1744d7f1226f665aa0ccc59965e302a9bd57b62872040d57eea1201562a7cbb2 – before 7110c7f70c59eb7924e79853bcc00e2a026662e665e302a9bd57b62872040d57eea1201562a7cbb2 – before bea736a2b8c6da5b1078badf1206541b5404250f65e302a9bd57b62872040d57eea1201562a7cbb2 – before 4c9dc0faca98084922caeb689579d338cf3e1c29
Linux Linux 5.13

References