Riskcovery

CVE-2025-68376

coresight: ETR: Fix ETR buffer use-after-free issue

State
Published
Severity
Not scored
Published
Dec 24, 2025
Updated
Oct 21, 2026
Reserved
Dec 16, 2025

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • bd2767ec3df2775bc336f441f9068a989ccb919d to before 5d5d130835b417c7bfd6c942f0149e34397d4463Affected
  • bd2767ec3df2775bc336f441f9068a989ccb919d to before 4e83434247ff8005a0b9a1ee997864abf8f259ecAffected
  • bd2767ec3df2775bc336f441f9068a989ccb919d to before 70acbc9c77686b7a521af6d7a543dcd9c324cf07Affected
  • bd2767ec3df2775bc336f441f9068a989ccb919d to before cda077a19f5c8d6ec61e5b97deca203d95e3a422Affected
  • bd2767ec3df2775bc336f441f9068a989ccb919d to before 35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3Affected
  • fdd3ceb0001da6768bede9779a0190a42e65c404Affected
  • 6.5.8 to before 6.6Affected
LinuxLinux
  • 6.6Affected
  • before 6.6Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.17.13 through 6.17.*Not affected
  • 6.18.2 through 6.18.*Not affected
  • 6.19 and laterNot affected

References

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