CVE-2025-39819
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)
fs/smb: Fix inconsistent refcnt update
In the Linux kernel, the following vulnerability has been resolved: fs/smb: Fix inconsistent refcnt update A possible inconsistent update of refcount was identified in `smb2_compound_op`. Such inconsistent update could lead to possible resource leaks. Why it is a possible bug: 1. In the comment section of the function, it clearly states that the reference to `cfile` should be dropped after calling this function. 2. Every control flow path would check and drop the reference to `cfile`, except the patched one. 3. Existing callers would not handle refcount update of `cfile` if -ENOMEM is returned. To fix the bug, an extra goto label "out" is added, to make sure that the cleanup logic would always be respected. As the problem is caused by the allocation failure of `vars`, the cleanup logic between label "finished" and "out" can be safely ignored. According to the definition of function `is_replayable_error`, the error code of "-ENOMEM" is not recoverable. Therefore, the replay logic also gets ignored.
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) |
|---|---|---|---|---|---|
| a7d5c294628088781da9e91cbb034d61c3a71f71 | affected | git | 3fc11ff13fbc2749871d6ac2141685cf54699997 | Unavailable | None listed |
| a7d5c294628088781da9e91cbb034d61c3a71f71 | affected | git | 4191ea1f0bb3e27d65c5dcde7bd00e709ec67141 | Unavailable | None listed |
| a7d5c294628088781da9e91cbb034d61c3a71f71 | affected | git | 4735f5991f51468b85affb8366b7067248457a71 | Unavailable | None listed |
| a7d5c294628088781da9e91cbb034d61c3a71f71 | affected | git | cc82c6dff548f0066a51a6e577c7454e7d26a968 | Unavailable | None listed |
| a7d5c294628088781da9e91cbb034d61c3a71f71 | affected | git | ab529e6ca1f67bcf31f3ea80c72bffde2e9e053e | 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) |
|---|---|---|---|---|---|
| 5.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.8 | Unavailable | None listed |
| 6.1.150 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.104 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.45 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.16.5 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |