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Vulnerability · Published Sep 11, 2026 · Assigned by Linux

CVE-2026-89719zram: fix out-of-bounds access in read_block_state()

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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.7% 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: zram: fix out-of-bounds access in read_block_state() read_block_state() calculates nr_pages before taking dev_lock. If the device is reset and reinitialized with a smaller disksize before lock acquisition, nr_pages still describes the old table. The subsequent loop can then call slot_lock() past the end of the newly allocated table. Read disksize after acquiring dev_lock and checking that the device is initialized. The read lock then keeps the table and its bound stable for the duration of the scan.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-89719
Debian:13linux6.12.111-1DEBIAN-CVE-2026-89719
Debian:14linux7.2.6-1DEBIAN-CVE-2026-89719
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-89719
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-89719
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-89719
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-89719
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-89719

Affected products (as reported)

VendorProductVersions
Linux Linux c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before fee53224c8261541cf310b57ac7c77a80e144483c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before 26a55336be91004dbd438f3b89b0c31617459976c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before a189cae92e97d90a9553740f5558d6f74446d3d1c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before f5e9f3a75efc774f17ab3f33826630d7fe30c7eac0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before 6d52c1f43ff39ea1ebf8f016e847677f0b60cf2bc0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before e7dbcb7a561a21e9a8f5b5fa90bb95aefbd0739dc0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before 5e458fa714a55b6b64a9fe0c6d4fa609609f9ec3c0265342bff4fcaa2cdf13f4596244c18d4a7ae5 – before 391f057f44a51cc9418da5cba78b014324174264
Linux Linux 4.18

References