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Vulnerability · Published Oct 28, 2026 · Assigned by Linux

CVE-2026-99135dm-integrity: fix infinite loop on discard with large tag size

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: dm-integrity: fix infinite loop on discard with large tag size When integrity_metadata handles a discard, it fills a buffer with DISCARD_FILLER and writes it over the tags, max_blocks blocks at a time. If the kmalloc fails, the buffer is the on-stack array checksums_onstack and max_size is set to HASH_MAX_DIGESTSIZE. So if the tag size is larger than HASH_MAX_DIGESTSIZE, max_blocks is zero, bi_size is never decremented and the loop never terminates. Fix this by using sizeof(checksums_onstack) as max_size. The array has MAX_TAG_SIZE bytes since commit b93b6643e9b5 ("dm integrity: fix a crash with unusually large tag size"), so max_blocks is at least 1.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-99135
Debian:13linux6.12.115-2DEBIAN-CVE-2026-99135
Debian:14linux7.2.13-1DEBIAN-CVE-2026-99135
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99135
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-99135
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-99135
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-99135

Affected products (as reported)

VendorProductVersions
Linux Linux 84597a44a9d86ac949900441cea7da0af0f2f473 – before f41a224b3c9d66c7b59afc7cae02a8b214f3c68484597a44a9d86ac949900441cea7da0af0f2f473 – before c66f5c6ccfa832d28b44a66c01e3468c246adac484597a44a9d86ac949900441cea7da0af0f2f473 – before 41a18e6c6e2c4a912494a035c17ecfe79c68b9e684597a44a9d86ac949900441cea7da0af0f2f473 – before bbc154a7da4e075aef720ef051aff6094400eb6684597a44a9d86ac949900441cea7da0af0f2f473 – before c4cba6670fa199415689f67108e96b0ba469d76784597a44a9d86ac949900441cea7da0af0f2f473 – before fc512700f1413fed652dac22fa1c4e837210b9c084597a44a9d86ac949900441cea7da0af0f2f473 – before 251b44b424920df9204e88a81fb3f78fa48ddd9984597a44a9d86ac949900441cea7da0af0f2f473 – before 18d80c77b4c7dd20699e81cedfbbff4e9d198f28
Linux Linux 5.7

References