Log in Start free

Vulnerability · Published Dec 24, 2025 · Assigned by Linux

CVE-2025-68376coresight: ETR: Fix ETR buffer use-after-free issue

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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 88.1% 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: coresight: ETR: Fix ETR buffer use-after-free issue When ETR is enabled as CS_MODE_SYSFS, if the buffer size is changed and enabled again, currently sysfs_buf will point to the newly allocated memory(buf_new) and free the old memory(buf_old). But the etr_buf that is being used by the ETR remains pointed to buf_old, not updated to buf_new. In this case, it will result in a memory use-after-free issue. Fix this by checking ETR's mode before updating and releasing buf_old, if the mode is CS_MODE_SYSFS, then skip updating and releasing it.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.115-2DEBIAN-CVE-2025-68376
Debian:14linux6.17.13-1DEBIAN-CVE-2025-68376
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux6.17.0-19.19UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-aws6.17.0-1009.9UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1009.9~24.04.2UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-azure6.17.0-1010.10UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1010.10~24.04.1UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-gcp6.17.0-1009.9UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1009.9~24.04.3UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-19.19~24.04.2UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1018.18UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1017.17UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-oracle6.17.0-1009.9UBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1009.9~24.04.1UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-raspi6.17.0-1010.10UBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-realtime6.17.0-1008.9UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68376
Ubuntu:25.10linux-riscv6.17.0-19.19.1UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-19.19.1~24.04.1UBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-68376
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-68376
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-68376

Affected products (as reported)

VendorProductVersions
Linux Linux bd2767ec3df2775bc336f441f9068a989ccb919d – before 5d5d130835b417c7bfd6c942f0149e34397d4463bd2767ec3df2775bc336f441f9068a989ccb919d – before 4e83434247ff8005a0b9a1ee997864abf8f259ecbd2767ec3df2775bc336f441f9068a989ccb919d – before 70acbc9c77686b7a521af6d7a543dcd9c324cf07bd2767ec3df2775bc336f441f9068a989ccb919d – before cda077a19f5c8d6ec61e5b97deca203d95e3a422bd2767ec3df2775bc336f441f9068a989ccb919d – before 35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3fdd3ceb0001da6768bede9779a0190a42e65c4046.5.8 – before 6.6
Linux Linux 6.6

References