block: stop the timeout timer when releasing a never added disk
In the Linux kernel, the following vulnerability has been resolved: block: stop the timeout timer when releasing a never added disk disk_release() undoes blk_mq_init_allocated_queue() for a disk whose probe failed before add_disk(), but it only calls blk_mq_exit_queue(). Nothing there stops q->timeout, and that timer rolls forward: it stays pending until it next expires, not until the last request completes. So if the driver issued any I/O before adding the disk, the request_queue is freed while still linked into a timer wheel bucket. Commit 6f8191fdf41d ("block: simplify disk shutdown") dropped the blk_cleanup_queue() call that used to stop it. __del_gendisk() and blk_mq_destroy_queue() still do; only the probe failure path lost it. nvme gets there because nvme_update_ns_info() submits Report Zones or FDP io-mgmt-recv on ns->queue before the disk is added, so a later failure - a concurrent reset setting NVME_CTRL_FROZEN, or device_add_disk() failing - lands in put_disk() with the timer armed: BUG: KASAN: slab-use-after-free in detach_if_pending+0x30c/0x340 Write of size 8 at addr ffff888004d71310 by task kworker/u8:2/37 __timer_delete_sync+0x156/0x240 kernel/time/timer.c:1621 blk_sync_queue+0x22/0x40 block/blk-core.c:222 nvme_sync_queues+0x100/0x150 drivers/nvme/host/core.c:5362 nvme_reset_work+0x138/0x930 drivers/nvme/host/pci.c:3264 Allocated by task 34: __blk_mq_alloc_disk+0x33/0x100 block/blk-mq.c:4462 nvme_alloc_ns+0x290/0x3870 drivers/nvme/host/core.c:4146 Freed by tas
CVE-2026-80589
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-2026-80589
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": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "6ae7364f68e6c7af6b6df4bbb14040b89e5975d0",
"versionType": "git"
},
{
"status": "affected",
"version": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "6f06dbe5012c160e0dba418a5a9cb16c456ad46a",
"versionType": "git"
},
{
"status": "affected",
"version": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "1a0ae4d502062a2759f2a92d12bdeab3c64c7372",
"versionType": "git"
},
{
"status": "affected",
"version": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "bb03b56d1d754908a37a160603be21769da423cf",
"versionType": "git"
},
{
"status": "affected",
"version": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "93d620519d71dfc6ee64b5baea74f1d85d4439fb",
"versionType": "git"
},
{
"status": "affected",
"version": "6f8191fdf41d3a53cc1d63fe2234e812c55a0092",
"lessThan": "26cb8ebbfaf713c82e142d08828d4d765057633b",
"versionType": "git"
},
{
"status": "affected",
"version": "d27b66257db183fe11c10f31246ae965adb005d3",
"versionType": "git"
},
{
"status": "affected",
"version": "5.19.12",
"lessThan": "5.20",
"versionType": "semver"
}
],
"programFiles": [
"block/genhd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"block/genhd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80589
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #34337 · Revision 1
- Added to Heist Feed
- Publisher date