CVE-2026-74416
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix memory leak in radeon_ring_restore() on lock failure radeon_ring_restore() takes ownership of the data buffer allocated by radeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in the non-restore branch; in the restore branch it relies on radeon_ring_restore() to free it. If radeon_ring_lock() fails, the function returned early without calling kvfree(data), leaking the ring backup buffer on every GPU reset that fails at the lock stage. During repeated GPU resets this causes cumulative kernel memory exhaustion. Free data before returning the error.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-08-15 06:22:43.690000
Last modified
2026-11-06 17:19:47.827000
View original CVE JSON
{
"id": "CVE-2026-74416",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-15T06:22:43.690",
"lastModified": "2026-11-06T17:19:47.827",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix memory leak in radeon_ring_restore() on lock failure\n\nradeon_ring_restore() takes ownership of the data buffer allocated by\nradeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in\nthe non-restore branch; in the restore branch it relies on\nradeon_ring_restore() to free it.\n\nIf radeon_ring_lock() fails, the function returned early without calling\nkvfree(data), leaking the ring backup buffer on every GPU reset that\nfails at the lock stage. During repeated GPU resets this causes\ncumulative kernel memory exhaustion.\n\nFree data before returning the error."
}
],
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"affectedData": [
{
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"defaultStatus": "unaffected",
"programFiles": [
"drivers/gpu/drm/radeon/radeon_ring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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{
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{
"version": "6.1.178",
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{
"version": "6.6.145",
"lessThanOrEqual": "6.6.*",
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},
{
"version": "6.12.97",
"lessThanOrEqual": "6.12.*",
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},
{
"version": "6.18.40",
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{
"version": "7.1.5",
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{
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"versionType": "original_commit_for_fix",
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}
]
}
],
"metrics": {
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{
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"ssvcData": {
"timestamp": "2026-11-06T16:57:10.933901Z",
"id": "CVE-2026-74416",
"options": [
{
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{
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{
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