HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request
In the Linux kernel, the following vulnerability has been resolved: HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request As reported by Sashiko: If a transport driver encounters a hardware error and returns a negative error code such as -EPIPE, ret is implicitly promoted to size_t when compared against size. This causes the negative error code to evaluate as a large positive number, making the (ret > size) condition true. This silently converts the hardware error into a success return value and copies the unmodified buffer back, which could leave BPF programs operating on uninitialized or stale data. Fix this by casting size into ssize_t to return the actual negative error code.
CVE-2026-98860
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98860
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d6efaa50af62fb0790dd1fd4e7e5506b46312510",
"lessThan": "8b85ef0f561039e249c3f883c5280a1449c6dbee",
"versionType": "git"
},
{
"status": "affected",
"version": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1",
"lessThan": "97be6396817bd3b11d06239010d27902940bfaa9",
"versionType": "git"
},
{
"status": "affected",
"version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645",
"lessThan": "f9f808227554b2c116fd07dd2328ecd74ea3f411",
"versionType": "git"
},
{
"status": "affected",
"version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645",
"lessThan": "3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c",
"versionType": "git"
},
{
"status": "affected",
"version": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.78",
"lessThan": "6.12.113",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.18.20",
"lessThan": "6.18.56",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.19.10",
"lessThan": "6.20",
"versionType": "semver"
}
],
"programFiles": [
"drivers/hid/bpf/hid_bpf_dispatch.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "7.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hid/bpf/hid_bpf_dispatch.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98860
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38757 · Revision 1
- Added to Heist Feed
- Publisher date