Answer in brief
CVE-2024-39496 records a Unknown severity vulnerability in btrfs: zoned: fix use-after-free due to race with dev replace. 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 | >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <17765964703b88d8befd899f8501150bb7e07e43 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <092571ef9a812566c8f2c9038d9c2a64c49788d6 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <a0cc006f4214b87e70983c692e05bb36c59b5752 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <0090d6e1b210551e63cf43958dc7a1ec942cdde9 | 17765964703b88d8befd899f8501150bb7e07e43, 092571ef9a812566c8f2c9038d9c2a64c49788d6, a0cc006f4214b87e70983c692e05bb36c59b5752, 0090d6e1b210551e63cf43958dc7a1ec942cdde9 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Jul 12, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix use-after-free due to race with dev replace While loading a zone's info during creation of a block group, we can race with a device replace operation and then trigger a use-after-free on the device that was just replaced (source device of the replace operation). This happens because at btrfs_load_zone_info() we extract a device from the chunk map into a local variable and then use the device while not under the protection of the device replace rwsem. So if there's a device replace operation happening when we extract the device and that device is the source of the replace operation, we will trigger a use-after-free if before we finish using the device the replace operation finishes and frees the device. Fix this by enlarging the critical section under the protection of the device replace rwsem so that all uses of the device are done inside the critical section.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2024-39496 records a Unknown severity vulnerability in btrfs: zoned: fix use-after-free due to race with dev replace. 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 | >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <17765964703b88d8befd899f8501150bb7e07e43 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <092571ef9a812566c8f2c9038d9c2a64c49788d6 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <a0cc006f4214b87e70983c692e05bb36c59b5752 || >=5b316468983dfa9473ff0f1c42e4e30b4c267141 <0090d6e1b210551e63cf43958dc7a1ec942cdde9 | 17765964703b88d8befd899f8501150bb7e07e43, 092571ef9a812566c8f2c9038d9c2a64c49788d6, a0cc006f4214b87e70983c692e05bb36c59b5752, 0090d6e1b210551e63cf43958dc7a1ec942cdde9 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Jul 12, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix use-after-free due to race with dev replace While loading a zone's info during creation of a block group, we can race with a device replace operation and then trigger a use-after-free on the device that was just replaced (source device of the replace operation). This happens because at btrfs_load_zone_info() we extract a device from the chunk map into a local variable and then use the device while not under the protection of the device replace rwsem. So if there's a device replace operation happening when we extract the device and that device is the source of the replace operation, we will trigger a use-after-free if before we finish using the device the replace operation finishes and frees the device. Fix this by enlarging the critical section under the protection of the device replace rwsem so that all uses of the device are done inside the critical section.
Quoted source text, attributed separately from HOL analysis.