rpmsg: glink: fix deadlock in endpoint destroy during driver detach
In the Linux kernel, the following vulnerability has been resolved: rpmsg: glink: fix deadlock in endpoint destroy during driver detach During driver detach, the device core holds the device mutex throughout the driver's remove callback chain. When the rpmsg endpoint is destroyed as part of that teardown, the GLINK endpoint destroy implementation attempts to unregister the underlying rpmsg device. That unregistration calls device_del(), which tries to re-acquire the same device mutex already held higher up the stack, causing rmmod to hang indefinitely. The deadlock manifests with the following call chain: [<0>] device_del+0x44/0x414 <- tries to acquire same mutex [<0>] device_unregister+0x18/0x34 [<0>] rpmsg_unregister_device+0x28/0x4c [<0>] qcom_glink_remove_rpmsg_device+0x70/0xc0 [<0>] qcom_glink_destroy_ept+0x58/0xbc [<0>] rpmsg_dev_remove+0x50/0x60 [<0>] device_remove+0x4c/0x80 [<0>] device_release_driver_internal+0x1cc/0x228 <- acquires device mutex [<0>] driver_detach+0x4c/0x98 [<0>] bus_remove_driver+0x6c/0xbc [<0>] driver_unregister+0x30/0x60 [<0>] unregister_rpmsg_driver+0x10/0x1c [<0>] fastrpc_exit+0x28/0x38 [fastrpc] [<0>] __arm64_sys_delete_module+0x1b8/0x294 [<0>] invoke_syscall+0x48/0x10c [<0>] el0_svc_common.constprop.0+0xc0/0xe0 [<0>] do_el0_svc+0x1c/0x28 [<0>] el0_svc+0x34/0x108 [<0>] el0t_64_sync_handler+0xa0/0xe4 [<0>] el0t_64_sync+0x198/0x19c The rpmsg device unregistration inside endpoint destroy is redundant. In both contexts where endpoint destruction i
CVE-2026-93098
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-2026-93098
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": "93b6b9e4acff4794e7426d3ad64ef14e3b3e8919",
"lessThan": "73092c2292aa65515671e54abbcda2166d3827ed",
"versionType": "git"
},
{
"status": "affected",
"version": "24fd02c3a4798de7dc94b55d36a1685fe6cdaf69",
"lessThan": "bbc236357876d35a624030e5c50eedbc380be98e",
"versionType": "git"
},
{
"status": "affected",
"version": "32fe8cdf541863239b81c80b8b04112d6e8792cf",
"lessThan": "8597f669a5268e0dcf243e2b2d6ca00370117057",
"versionType": "git"
},
{
"status": "affected",
"version": "c6210714347f72bae8e7142dc0a7f99923c466e7",
"lessThan": "48f55b90f0d713e477e26b85d7327d9592d016f9",
"versionType": "git"
},
{
"status": "affected",
"version": "fcab5c2672f8dac3d77013dbe047b2441f4141f5",
"lessThan": "cbcdf96e1c87bc07055d04264018ded1f3bafffb",
"versionType": "git"
},
{
"status": "affected",
"version": "f80e4e91b010ee7d6c52f24d069975ac955ac6b2",
"lessThan": "ecad679e2b92c419cc22cc8f257cd457d5192647",
"versionType": "git"
},
{
"status": "affected",
"version": "a53e356df548f6b0e82529ef3cc6070f42622189",
"lessThan": "e559626bee8a6632aafc08eedcdb4bf26ca245c5",
"versionType": "git"
},
{
"status": "affected",
"version": "a53e356df548f6b0e82529ef3cc6070f42622189",
"lessThan": "5a5a48e788e02fd8a8eb7188ce440572d6c12418",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.248",
"lessThan": "5.10.270",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.198",
"lessThan": "5.15.221",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.160",
"lessThan": "6.1.188",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.120",
"lessThan": "6.6.157",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.64",
"lessThan": "6.12.110",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.18.3",
"lessThan": "6.18.52",
"versionType": "semver"
}
],
"programFiles": [
"drivers/rpmsg/qcom_glink_native.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/rpmsg/qcom_glink_native.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93098
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37827 · Revision 1
- Added to Heist Feed
- Publisher date