Answer in brief
CVE-2022-50095 records a High severity (CVSS 7.8) vulnerability in posix-cpu-timers: Cleanup CPU timers before freeing them during exec. 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.
CVSS is 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <541840859ace9c2ccebc32fa9e376c7bd3def490 || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <9e255ed238fc67058df87b0388ad6d4b2ef3a2bd || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <e8cb6e8fd9890780f1bfcf5592889e1b879e779c || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <b2fc1723eb65abb83e00d5f011de670296af0b28 || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <e362359ace6f87c201531872486ff295df306d13 | 541840859ace9c2ccebc32fa9e376c7bd3def490, 9e255ed238fc67058df87b0388ad6d4b2ef3a2bd, e8cb6e8fd9890780f1bfcf5592889e1b879e779c, b2fc1723eb65abb83e00d5f011de670296af0b28, e362359ace6f87c201531872486ff295df306d13 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer. When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID. That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free. Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-after-free.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-50095 records a High severity (CVSS 7.8) vulnerability in posix-cpu-timers: Cleanup CPU timers before freeing them during exec. 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.
CVSS is 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <541840859ace9c2ccebc32fa9e376c7bd3def490 || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <9e255ed238fc67058df87b0388ad6d4b2ef3a2bd || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <e8cb6e8fd9890780f1bfcf5592889e1b879e779c || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <b2fc1723eb65abb83e00d5f011de670296af0b28 || >=55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 <e362359ace6f87c201531872486ff295df306d13 | 541840859ace9c2ccebc32fa9e376c7bd3def490, 9e255ed238fc67058df87b0388ad6d4b2ef3a2bd, e8cb6e8fd9890780f1bfcf5592889e1b879e779c, b2fc1723eb65abb83e00d5f011de670296af0b28, e362359ace6f87c201531872486ff295df306d13 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer. When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID. That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free. Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-after-free.
Quoted source text, attributed separately from HOL analysis.