Answer in brief
CVE-2026-74557 records a High severity (CVSS 7.5) vulnerability in scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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 7.5. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <7567f06abdefb1caf2d836107c4d08c5185c650e || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <60499924faf4ef97e84228c20515218ef121facf || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <3ef209ca0b4b68c75e9a814d90cc916026b5a6ac || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <1f07a897d43c63e6c9458bf77450defef39b5833 || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <98b87885de4b7f605533a2860685f5689fce8e82 | 7567f06abdefb1caf2d836107c4d08c5185c650e, 60499924faf4ef97e84228c20515218ef121facf, 3ef209ca0b4b68c75e9a814d90cc916026b5a6ac, 1f07a897d43c63e6c9458bf77450defef39b5833, 98b87885de4b7f605533a2860685f5689fce8e82 |
| Linux/Linuxgeneric | 2.6.18 | Not reported |
| Linux/Linuxgeneric | >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <812f1ae95b22419422972748f173b0916ee4d621 || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <fef6167e8149896cd81bea333fd51b1c91239149 || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <baa04572673125e4d5bc309b4077d1cb46cc78d1 || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <7567f06abdefb1caf2d836107c4d08c5185c650e || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <60499924faf4ef97e84228c20515218ef121facf || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <3ef209ca0b4b68c75e9a814d90cc916026b5a6ac || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <1f07a897d43c63e6c9458bf77450defef39b5833 || >=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <98b87885de4b7f605533a2860685f5689fce8e82 | 812f1ae95b22419422972748f173b0916ee4d621, fef6167e8149896cd81bea333fd51b1c91239149, baa04572673125e4d5bc309b4077d1cb46cc78d1, 7567f06abdefb1caf2d836107c4d08c5185c650e, 60499924faf4ef97e84228c20515218ef121facf, 3ef209ca0b4b68c75e9a814d90cc916026b5a6ac, 1f07a897d43c63e6c9458bf77450defef39b5833, 98b87885de4b7f605533a2860685f5689fce8e82 |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 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: scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer iscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the target-supplied data segment. The segment carries a 2-byte sense length followed by the sense bytes, so it must hold 2 + senselen bytes, but the bounds check only requires datalen >= senselen: senselen = get_unaligned_be16(data); if (datalen < senselen) goto invalid_datalen; memcpy(sc->sense_buffer, data + 2, min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE)); A target that returns a SCSI Response whose datalen equals senselen (with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data + 2 read up to two bytes past the received data. Those bytes are stale conn->data contents and end up in the command's sense buffer, which is returned to userspace. Account for the 2-byte sense length prefix in the check.
Quoted source text, attributed separately from HOL analysis.