Answer in brief
CVE-2025-68376 records a Unknown severity vulnerability in coresight: ETR: Fix ETR buffer use-after-free issue. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=bd2767ec3df2775bc336f441f9068a989ccb919d <5d5d130835b417c7bfd6c942f0149e34397d4463 || >=bd2767ec3df2775bc336f441f9068a989ccb919d <4e83434247ff8005a0b9a1ee997864abf8f259ec || >=bd2767ec3df2775bc336f441f9068a989ccb919d <70acbc9c77686b7a521af6d7a543dcd9c324cf07 || >=bd2767ec3df2775bc336f441f9068a989ccb919d <cda077a19f5c8d6ec61e5b97deca203d95e3a422 || >=bd2767ec3df2775bc336f441f9068a989ccb919d <35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3 || fdd3ceb0001da6768bede9779a0190a42e65c404 || >=6.5.8 <6.6 | 5d5d130835b417c7bfd6c942f0149e34397d4463, 4e83434247ff8005a0b9a1ee997864abf8f259ec, 70acbc9c77686b7a521af6d7a543dcd9c324cf07, cda077a19f5c8d6ec61e5b97deca203d95e3a422, 35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 20, 2026
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.
Quoted source text, attributed separately from HOL analysis.