CVE-2025-68376
coresight: ETR: Fix ETR buffer use-after-free issue
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
bd2767ec3df2775bc336f441f9068a989ccb919d < 70acbc9c77686b7a521af6d7a543dcd9c324cf07 bd2767ec3df2775bc336f441f9068a989ccb919d < cda077a19f5c8d6ec61e5b97deca203d95e3a422 bd2767ec3df2775bc336f441f9068a989ccb919d < 35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3 fdd3ceb0001da6768bede9779a0190a42e65c404
Linux / Linux
6.6