- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: usb: usblp: fix heap leak in IEEE 1284 device ID via short response usblp_ctrl_msg() collapses the usb_control_msg() return value to 0/-errno, discarding the actual number of bytes transferred. A broken printer can complete the GET_DEVICE_ID control transfer short and the driver has no way to know. usblp_cache_device_id_string() reads the 2-byte big-endian length prefix from the response and trusts it (clamped only to the buffer bounds). The buffer is kmalloc(1024) at probe time. A device that sends exactly two bytes (e.g. 0x03 0xFF, claiming a 1023-byte ID) leaves device_id_string[2..1022] holding stale kmalloc heap. That stale data is then exposed: - via the ieee1284_id sysfs attribute (sprintf("%s", buf+2), truncated at the first NUL in the stale heap), and - via the IOCNR_GET_DEVICE_ID ioctl, which copy_to_user()s the full claimed length regardless of NULs, up to 1021 bytes of uninitialized heap, with the leak size chosen by the device. Fix this up by just zapping the buffer with zeros before each request sent to the device.
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 4650cce898fcd0bb8c33e529984687a8caed10c3
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 612640abbd9e0947fe8f37aaf0cf324265d7caa4
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 4220d4dd062ea3d3eb056a6cbe0b568e740d20b1
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 6e29c32a27218f2dcd4a4e9b0b3c5e7728640698
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 6d8142141c942c0d8e79343cffda9c44bb1f3f4f
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 8247f52d822180e94ccbfdab91613af386a4e34d
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 522d17e93a85575256894212d10e5a1fa6f36529
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 7a400c6fe3617e31e690e3f7ca37bb335e0498f3
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.88 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
9
- https://git.kernel.org/stable/c/4650cce898fcd0bb8c33e529984687a8caed10c3 (opens in a new tab)
- https://git.kernel.org/stable/c/612640abbd9e0947fe8f37aaf0cf324265d7caa4 (opens in a new tab)
- https://git.kernel.org/stable/c/4220d4dd062ea3d3eb056a6cbe0b568e740d20b1 (opens in a new tab)
- https://git.kernel.org/stable/c/6e29c32a27218f2dcd4a4e9b0b3c5e7728640698 (opens in a new tab)
- https://git.kernel.org/stable/c/6d8142141c942c0d8e79343cffda9c44bb1f3f4f (opens in a new tab)
- https://git.kernel.org/stable/c/8247f52d822180e94ccbfdab91613af386a4e34d (opens in a new tab)
- https://git.kernel.org/stable/c/522d17e93a85575256894212d10e5a1fa6f36529 (opens in a new tab)
- https://git.kernel.org/stable/c/7a400c6fe3617e31e690e3f7ca37bb335e0498f3 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32778 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46151)Record last updated .