coresight: ETR: Fix ETR buffer use-after-free issue
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.
CVE-2025-68376
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-68376
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "bd2767ec3df2775bc336f441f9068a989ccb919d",
"lessThan": "5d5d130835b417c7bfd6c942f0149e34397d4463",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2767ec3df2775bc336f441f9068a989ccb919d",
"lessThan": "4e83434247ff8005a0b9a1ee997864abf8f259ec",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2767ec3df2775bc336f441f9068a989ccb919d",
"lessThan": "70acbc9c77686b7a521af6d7a543dcd9c324cf07",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2767ec3df2775bc336f441f9068a989ccb919d",
"lessThan": "cda077a19f5c8d6ec61e5b97deca203d95e3a422",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2767ec3df2775bc336f441f9068a989ccb919d",
"lessThan": "35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3",
"versionType": "git"
},
{
"status": "affected",
"version": "fdd3ceb0001da6768bede9779a0190a42e65c404",
"versionType": "git"
},
{
"status": "affected",
"version": "6.5.8",
"lessThan": "6.6",
"versionType": "semver"
}
],
"programFiles": [
"drivers/hwtracing/coresight/coresight-tmc-etr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hwtracing/coresight/coresight-tmc-etr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-68376
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46072 · Revision 1
- Added to Heist Feed
- Publisher date