Answer in brief
CVE-2022-50300 records a High severity (CVSS 7.8) vulnerability in btrfs: fix extent map use-after-free when handling missing device in read_one_chunk. 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 | >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <b8e7ed42bc3ca0d0e4191ee394d34962d3624c22 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <fce3713197ebba239e1c7e02174ed216ea1ee014 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <169a4cf46882974d4db6d85eb623ec898e51bbc0 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <1742e1c90c3da344f3bb9b1f1309b3f47482756a | b8e7ed42bc3ca0d0e4191ee394d34962d3624c22, fce3713197ebba239e1c7e02174ed216ea1ee014, 169a4cf46882974d4db6d85eb623ec898e51bbc0, 1742e1c90c3da344f3bb9b1f1309b3f47482756a |
| Linux/Linuxgeneric | 4.15 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-50300 records a High severity (CVSS 7.8) vulnerability in btrfs: fix extent map use-after-free when handling missing device in read_one_chunk. 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 | >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <b8e7ed42bc3ca0d0e4191ee394d34962d3624c22 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <fce3713197ebba239e1c7e02174ed216ea1ee014 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <169a4cf46882974d4db6d85eb623ec898e51bbc0 || >=adfb69af7d8cb6a3958f75aad1ef4bc96891d116 <1742e1c90c3da344f3bb9b1f1309b3f47482756a | b8e7ed42bc3ca0d0e4191ee394d34962d3624c22, fce3713197ebba239e1c7e02174ed216ea1ee014, 169a4cf46882974d4db6d85eb623ec898e51bbc0, 1742e1c90c3da344f3bb9b1f1309b3f47482756a |
| Linux/Linuxgeneric | 4.15 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721
Quoted source text, attributed separately from HOL analysis.