Answer in brief
CVE-2021-47087 records a High severity (CVSS 7.8) vulnerability in tee: optee: Fix incorrect page free bug. 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 |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3c712f14d8a9354a8807c15c64c8dd334499cc42 <806142c805cacd098e61bdc0f72c778a2389fe4a || >=1340dc3fb75ea69221f4f5dcb0cbace55ad0331c <ad338d825e3f7b96ee542bf313728af2d19fe9ad || >=ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 <91e94e42f6fc49635f1a16d8ae3f79552bcfda29 || >=ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 <18549bf4b21c739a9def39f27dcac53e27286ab5 || 255e17923b22cb7abd026e044416d61f6bd0eec0 || >=5.4.140 <5.4.169 || >=5.10.58 <5.10.89 || >=5.13.10 <5.14 | 806142c805cacd098e61bdc0f72c778a2389fe4a, ad338d825e3f7b96ee542bf313728af2d19fe9ad, 91e94e42f6fc49635f1a16d8ae3f79552bcfda29, 18549bf4b21c739a9def39f27dcac53e27286ab5, 5.4.169, 5.10.89, 5.14 |
| Linux/Linuxgeneric | 5.14 | Not reported |
Published upstream
Mar 4, 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: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47087 records a High severity (CVSS 7.8) vulnerability in tee: optee: Fix incorrect page free bug. 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 |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3c712f14d8a9354a8807c15c64c8dd334499cc42 <806142c805cacd098e61bdc0f72c778a2389fe4a || >=1340dc3fb75ea69221f4f5dcb0cbace55ad0331c <ad338d825e3f7b96ee542bf313728af2d19fe9ad || >=ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 <91e94e42f6fc49635f1a16d8ae3f79552bcfda29 || >=ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 <18549bf4b21c739a9def39f27dcac53e27286ab5 || 255e17923b22cb7abd026e044416d61f6bd0eec0 || >=5.4.140 <5.4.169 || >=5.10.58 <5.10.89 || >=5.13.10 <5.14 | 806142c805cacd098e61bdc0f72c778a2389fe4a, ad338d825e3f7b96ee542bf313728af2d19fe9ad, 91e94e42f6fc49635f1a16d8ae3f79552bcfda29, 18549bf4b21c739a9def39f27dcac53e27286ab5, 5.4.169, 5.10.89, 5.14 |
| Linux/Linuxgeneric | 5.14 | Not reported |
Published upstream
Mar 4, 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: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.
Quoted source text, attributed separately from HOL analysis.