Answer in brief
CVE-2021-47351 records a High severity (CVSS 7.8) vulnerability in ubifs: Fix races between xattr_{set|get} and listxattr operations. 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 | >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <38dde03eb239605f428f3f1e4baa73d4933a4cc6 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <9558612cb829f2c022b788f55d6b8437d5234a82 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <c0756f75c22149d20fcb7d8409827cee905eb386 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <f4e3634a3b642225a530c292fdb1e8a4007507f5 | 7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08, 38dde03eb239605f428f3f1e4baa73d4933a4cc6, 9558612cb829f2c022b788f55d6b8437d5234a82, c0756f75c22149d20fcb7d8409827cee905eb386, f4e3634a3b642225a530c292fdb1e8a4007507f5 |
| Linux/Linuxgeneric | 2.6.27 | Not reported |
Published upstream
May 21, 2024
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: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/[email protected]
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47351 records a High severity (CVSS 7.8) vulnerability in ubifs: Fix races between xattr_{set|get} and listxattr operations. 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 | >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <38dde03eb239605f428f3f1e4baa73d4933a4cc6 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <9558612cb829f2c022b788f55d6b8437d5234a82 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <c0756f75c22149d20fcb7d8409827cee905eb386 || >=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <f4e3634a3b642225a530c292fdb1e8a4007507f5 | 7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08, 38dde03eb239605f428f3f1e4baa73d4933a4cc6, 9558612cb829f2c022b788f55d6b8437d5234a82, c0756f75c22149d20fcb7d8409827cee905eb386, f4e3634a3b642225a530c292fdb1e8a4007507f5 |
| Linux/Linuxgeneric | 2.6.27 | Not reported |
Published upstream
May 21, 2024
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: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/[email protected]
Quoted source text, attributed separately from HOL analysis.