Answer in brief
CVE-2026-46167 records a Unknown severity vulnerability in usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0f7c41314ebf17049917a452684db371babf711a || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cf24991619be317e2769310b4a367bf4a04b82bc || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <087d97342c100138ea7d75a50977c9c2319f957b || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d06d937b0a4cdb8867f04275c8100a8b943da31a || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a502b997668401a6821501fc98b7f9220f9b6ff2 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <762a6ccf391db0d629e590a803a3a2231e17dd3f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6b0e7438e31c74b01514d31ff35c1e688c4baaba || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b38e53cbfb9d84732e5984fbd73e128d592415c5 | 0f7c41314ebf17049917a452684db371babf711a, cf24991619be317e2769310b4a367bf4a04b82bc, 087d97342c100138ea7d75a50977c9c2319f957b, d06d937b0a4cdb8867f04275c8100a8b943da31a, a502b997668401a6821501fc98b7f9220f9b6ff2, 762a6ccf391db0d629e590a803a3a2231e17dd3f, 6b0e7438e31c74b01514d31ff35c1e688c4baaba, b38e53cbfb9d84732e5984fbd73e128d592415c5 |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl Just like in a previous problem in this driver, usblp_ctrl_msg() will collapse the usb_control_msg() return value to 0/-errno, discarding the actual number of bytes transferred. Ideally that short command should be detected and error out, but many printers are known to send "incorrect" responses back so we can't just do that. statusbuf is kmalloc(8) at probe time and never filled before the first LPGETSTATUS ioctl. usblp_read_status() requests 1 byte. If a malicious printer responds with zero bytes, *statusbuf is one byte of stale kmalloc heap, sign-extended into the local int status, which the LPGETSTATUS path then copy_to_user()s directly to the ioctl caller. Fix this all by just zapping out the memory buffer when allocated at probe time. If a later call does a short read, the data will be identical to what the device sent it the last time, so there is no "leak" of information happening.
Quoted source text, attributed separately from HOL analysis.