HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients
In the Linux kernel, the following vulnerability has been resolved: HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients During a warm reset flow, the cl->device pointer may be NULL if the reset occurs while clients are still being enumerated. Accessing cl->device->reference_count without a NULL check leads to a kernel panic. This issue was identified during multi-unit warm reboot stress clycles. Add a defensive NULL check for cl->device to ensure stability under such intensive testing conditions. KASAN: null-ptr-deref in range [0000000000000000-0000000000000007] Workqueue: ish_fw_update_wq fw_reset_work_fn Call Trace: ishtp_bus_remove_all_clients+0xbe/0x130 [intel_ishtp] ishtp_reset_handler+0x85/0x1a0 [intel_ishtp] fw_reset_work_fn+0x8a/0xc0 [intel_ish_ipc]
CVE-2026-45877
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-2026-45877
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": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"lessThan": "cde7f709d1025dadfc52e903e43981c1644bd8bd",
"versionType": "git"
},
{
"status": "affected",
"version": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"lessThan": "0b605e8ce60698c27a26f512968a597fd620d2e8",
"versionType": "git"
},
{
"status": "affected",
"version": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"lessThan": "feb4bcfd405282de60aba321f13a1272b30c5af4",
"versionType": "git"
},
{
"status": "affected",
"version": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"lessThan": "272dac57caa981718e7188c80c703e7bb1998054",
"versionType": "git"
},
{
"status": "affected",
"version": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"lessThan": "56f7db581ee73af53cd512e00a6261a025bf1d58",
"versionType": "git"
}
],
"programFiles": [
"drivers/hid/intel-ish-hid/ishtp/bus.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.4",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hid/intel-ish-hid/ishtp/bus.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-45877
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46304 · Revision 1
- Added to Heist Feed
- Publisher date