CVE-2025-39689
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ftrace: Also allocate and copy hash for reading of filter files
In the Linux kernel, the following vulnerability has been resolved: ftrace: Also allocate and copy hash for reading of filter files Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds the pointer to the global tracer hash to its iterator. Unlike the writer that allocates a copy of the hash, the reader keeps the pointer to the filter hashes. This is problematic because this pointer is static across function calls that release the locks that can update the global tracer hashes. This can cause UAF and similar bugs. Allocate and copy the hash for reading the filter files like it is done for the writers. This not only fixes UAF bugs, but also makes the code a bit simpler as it doesn't have to differentiate when to free the iterator's hash between writers and readers.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | 12064e1880fc9202be75ff668205b1703d92f74f | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | c4cd93811e038d19f961985735ef7bb128078dfb | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | e0b6b223167e1edde5c82edf38e393c06eda1f13 | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | a40c69f4f1ed96acbcd62e9b5ff3a596f0a91309 | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | 3b114a3282ab1a12cb4618a8f45db5d7185e784a | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | c591ba1acd081d4980713e47869dd1cc3d963d19 | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | 64db338140d2bad99a0a8c6a118dd60b3e1fb8cb | Unavailable | None listed |
| c20489dad156dd9919ebd854bbace46dbd2576a3 | affected | git | bfb336cf97df7b37b2b2edec0f69773e06d11955 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.12 | Unavailable | None listed |
| 5.4.297 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.241 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.190 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.149 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.103 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.44 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.16.4 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |