Answer in brief
CVE-2026-72197 records a Unknown severity vulnerability in fs/ntfs3: bound DeleteIndexEntryAllocation memmove length. 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.
Answer in brief
CVE-2026-72197 records a Unknown severity vulnerability in fs/ntfs3: bound DeleteIndexEntryAllocation memmove length. 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.
A CVSS score is not reported in the current record. 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 | >=b46acd6a6a627d876898e1c84d3f84902264b445 <c38ed2ab62fab75fd6d0fdc2bee540fbebc7b959 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <b509b9613f20dc5b653d54bf78fab00d79cc43c8 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <4c8aac931c1cd70347961ba5157aa916448c6a25 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <f383aae59ec3994c14804f4191c59038b206be81 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <09fddd52c1b0cef2c086d61be8f3d5dc92e36565 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <554700c65d398276cb00a8ef95f1d5e00b9eff93 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <fc4626bb3656362de8b0ecd56605d47a19ec3518 | c38ed2ab62fab75fd6d0fdc2bee540fbebc7b959, b509b9613f20dc5b653d54bf78fab00d79cc43c8, 4c8aac931c1cd70347961ba5157aa916448c6a25, f383aae59ec3994c14804f4191c59038b206be81, 09fddd52c1b0cef2c086d61be8f3d5dc92e36565, 554700c65d398276cb00a8ef95f1d5e00b9eff93, fc4626bb3656362de8b0ecd56605d47a19ec3518 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound DeleteIndexEntryAllocation memmove length In do_action()'s DeleteIndexEntryAllocation case, e->size comes from an on-disk INDEX_BUFFER entry. When e->size makes e + e->size point past hdr + hdr->used, PtrOffset(e1, Add2Ptr(hdr, used)) returns a negative ptrdiff_t that is silently cast to a quasi-infinite size_t when passed to memmove(). The memmove then walks past the destination buffer. The sibling DeleteIndexEntryRoot case at fslog.c:3540-3543 already carries the corresponding guard: if (PtrOffset(e1, Add2Ptr(hdr, used)) < esize || Add2Ptr(e, esize) > Add2Ptr(lrh, rec_len) || used + esize > le32_to_cpu(hdr->total)) { goto dirty_vol; } Apply the same shape to the allocation-path case. Also reject esize == 0: memmove(e, e, ...) is a no-op and leaves hdr->used unchanged, hiding a malformed entry from the existing check_index_header() walk. Reproduced under UML+KASAN on mainline 8d90b09e6741 by mounting a crafted NTFS image: the unguarded memmove takes a length of 0xffffffffffffff00 and the kernel oopses in memmove+0x81/0x1a0 on the do_action+0x36a2 frame. [[email protected]: clang-formatted the changes]
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. 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 | >=b46acd6a6a627d876898e1c84d3f84902264b445 <c38ed2ab62fab75fd6d0fdc2bee540fbebc7b959 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <b509b9613f20dc5b653d54bf78fab00d79cc43c8 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <4c8aac931c1cd70347961ba5157aa916448c6a25 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <f383aae59ec3994c14804f4191c59038b206be81 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <09fddd52c1b0cef2c086d61be8f3d5dc92e36565 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <554700c65d398276cb00a8ef95f1d5e00b9eff93 || >=b46acd6a6a627d876898e1c84d3f84902264b445 <fc4626bb3656362de8b0ecd56605d47a19ec3518 | c38ed2ab62fab75fd6d0fdc2bee540fbebc7b959, b509b9613f20dc5b653d54bf78fab00d79cc43c8, 4c8aac931c1cd70347961ba5157aa916448c6a25, f383aae59ec3994c14804f4191c59038b206be81, 09fddd52c1b0cef2c086d61be8f3d5dc92e36565, 554700c65d398276cb00a8ef95f1d5e00b9eff93, fc4626bb3656362de8b0ecd56605d47a19ec3518 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound DeleteIndexEntryAllocation memmove length In do_action()'s DeleteIndexEntryAllocation case, e->size comes from an on-disk INDEX_BUFFER entry. When e->size makes e + e->size point past hdr + hdr->used, PtrOffset(e1, Add2Ptr(hdr, used)) returns a negative ptrdiff_t that is silently cast to a quasi-infinite size_t when passed to memmove(). The memmove then walks past the destination buffer. The sibling DeleteIndexEntryRoot case at fslog.c:3540-3543 already carries the corresponding guard: if (PtrOffset(e1, Add2Ptr(hdr, used)) < esize || Add2Ptr(e, esize) > Add2Ptr(lrh, rec_len) || used + esize > le32_to_cpu(hdr->total)) { goto dirty_vol; } Apply the same shape to the allocation-path case. Also reject esize == 0: memmove(e, e, ...) is a no-op and leaves hdr->used unchanged, hiding a malformed entry from the existing check_index_header() walk. Reproduced under UML+KASAN on mainline 8d90b09e6741 by mounting a crafted NTFS image: the unguarded memmove takes a length of 0xffffffffffffff00 and the kernel oopses in memmove+0x81/0x1a0 on the do_action+0x36a2 frame. [[email protected]: clang-formatted the changes]
Quoted source text, attributed separately from HOL analysis.