Answer in brief
CVE-2024-26712 records a High severity (CVSS 7.8) vulnerability in powerpc/kasan: Fix addr error caused by page alignment. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=663c0c9496a69f80011205ba3194049bcafd681d <230e89b5ad0a33f530a2a976b3e5e4385cb27882 || >=663c0c9496a69f80011205ba3194049bcafd681d <2738e0aa2fb24a7ab9c878d912dc2b239738c6c6 || >=663c0c9496a69f80011205ba3194049bcafd681d <0c09912dd8387e228afcc5e34ac5d79b1e3a1058 || >=663c0c9496a69f80011205ba3194049bcafd681d <0516c06b19dc64807c10e01bb99b552bdf2d7dbe || >=663c0c9496a69f80011205ba3194049bcafd681d <70ef2ba1f4286b2b73675aeb424b590c92d57b25 || >=663c0c9496a69f80011205ba3194049bcafd681d <4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 || 5ce93076d8ee2a0fac3ad4adbd2e91b6197146db || >=5.3.6 <5.4 | 230e89b5ad0a33f530a2a976b3e5e4385cb27882, 2738e0aa2fb24a7ab9c878d912dc2b239738c6c6, 0c09912dd8387e228afcc5e34ac5d79b1e3a1058, 0516c06b19dc64807c10e01bb99b552bdf2d7dbe, 70ef2ba1f4286b2b73675aeb424b590c92d57b25, 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0, 5.4 |
| Linux/Linuxgeneric | 5.4 | Not reported |
Published upstream
Apr 3, 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: powerpc/kasan: Fix addr error caused by page alignment In kasan_init_region, when k_start is not page aligned, at the begin of for loop, k_cur = k_start & PAGE_MASK is less than k_start, and then `va = block + k_cur - k_start` is less than block, the addr va is invalid, because the memory address space from va to block is not alloced by memblock_alloc, which will not be reserved by memblock_reserve later, it will be used by other places. As a result, memory overwriting occurs. for example: int __init __weak kasan_init_region(void *start, size_t size) { [...] /* if say block(dcd97000) k_start(feef7400) k_end(feeff3fe) */ block = memblock_alloc(k_end - k_start, PAGE_SIZE); [...] for (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) { /* at the begin of for loop * block(dcd97000) va(dcd96c00) k_cur(feef7000) k_start(feef7400) * va(dcd96c00) is less than block(dcd97000), va is invalid */ void *va = block + k_cur - k_start; [...] } [...] } Therefore, page alignment is performed on k_start before memblock_alloc() to ensure the validity of the VA address.
Quoted source text, attributed separately from HOL analysis.