Answer in brief
CVE-2026-46094 records a High severity (CVSS 7.1) vulnerability in ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access. 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 7.1. 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 | >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <ab6da97bc310db35d4e4ef5354bc3ff626b0698c || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <5a5314d2387633a272a04d1bd8727f99058e4e68 || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <537e065977022aa22f2c2503e8accaf16622e0fd || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <520986722dbf869c122252123fc161c7302eab7d || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <eceafc31ea7b42c984ece10d79d505c0bb6615d5 | ab6da97bc310db35d4e4ef5354bc3ff626b0698c, 5a5314d2387633a272a04d1bd8727f99058e4e68, 537e065977022aa22f2c2503e8accaf16622e0fd, 520986722dbf869c122252123fc161c7302eab7d, eceafc31ea7b42c984ece10d79d505c0bb6615d5 |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access The bounds check for the next xattr entry in check_xattrs() uses (void *)next >= end, which allows next to point within sizeof(u32) bytes of end. On the next loop iteration, IS_LAST_ENTRY() reads 4 bytes via *(__u32 *)(entry), which can overrun the valid xattr region. For example, if next lands at end - 1, the check passes since next < end, but IS_LAST_ENTRY() reads 4 bytes starting at end - 1, accessing 3 bytes beyond the valid region. Fix this by changing the check to (void *)next + sizeof(u32) > end, ensuring there is always enough space for the IS_LAST_ENTRY() read on the subsequent iteration.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-46094 records a High severity (CVSS 7.1) vulnerability in ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access. 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 7.1. 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 | >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <ab6da97bc310db35d4e4ef5354bc3ff626b0698c || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <5a5314d2387633a272a04d1bd8727f99058e4e68 || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <537e065977022aa22f2c2503e8accaf16622e0fd || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <520986722dbf869c122252123fc161c7302eab7d || >=3478c83cf26bbffd026ae6a56bcb1fe544f0834e <eceafc31ea7b42c984ece10d79d505c0bb6615d5 | ab6da97bc310db35d4e4ef5354bc3ff626b0698c, 5a5314d2387633a272a04d1bd8727f99058e4e68, 537e065977022aa22f2c2503e8accaf16622e0fd, 520986722dbf869c122252123fc161c7302eab7d, eceafc31ea7b42c984ece10d79d505c0bb6615d5 |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access The bounds check for the next xattr entry in check_xattrs() uses (void *)next >= end, which allows next to point within sizeof(u32) bytes of end. On the next loop iteration, IS_LAST_ENTRY() reads 4 bytes via *(__u32 *)(entry), which can overrun the valid xattr region. For example, if next lands at end - 1, the check passes since next < end, but IS_LAST_ENTRY() reads 4 bytes starting at end - 1, accessing 3 bytes beyond the valid region. Fix this by changing the check to (void *)next + sizeof(u32) > end, ensuring there is always enough space for the IS_LAST_ENTRY() read on the subsequent iteration.
Quoted source text, attributed separately from HOL analysis.