CVE-2026-99039

Что произошло

In the Linux kernel, the following vulnerability has been resolved: memstick: core: wait for request completion before freeing card In memstick_alloc_card() and memstick_set_rw_addr(), wait_for_completion_timeout() is used to wait for device identification and address configuration requests to complete. The memstick subsystem does not provide an abort or cancellation callback in struct memstick_host for in-flight requests. If wait_for_completion_timeout() expires (for instance, when a USB transfer or command retry is delayed), memstick_alloc_card() returns an error and frees the memstick_dev structure via kfree(card). However, the host controller driver (such as rtsx_usb_ms) is still running the request asynchronously in worker context. When the transfer eventually finishes, the driver writes into host->req->data, which points to memory inside the already freed card structure. This leads to a KASAN slab-use-after-free write: BUG: KASAN: slab-use-after-free in ms_read_bytes+0x8fe/0x990 Write of size 1 at addr ffff88813c188079 by task kworker/1:5/5239 Workqueue: events rtsx_usb_ms_handle_req Call Trace: ms_read_bytes+0x8fe/0x990 drivers/memstick/host/rtsx_usb_ms.c:450 rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:477 [inline] rtsx_usb_ms_handle_req+0x557/0x1a00 drivers/memstick/host/rtsx_usb_ms.c:531 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560 kthread+0x373/0x450 kernel/kthread.c:436 Allocated by task 1662: memstick_alloc_card drivers/memstick/core/memstick.c:383 [inline] memstick_check+0x2c1/0x10d0 drivers/memstick/core/memstick.c:452 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 Freed by task 1662: kfree+0x20c/0x650 mm/slub.c:6792 memstick_alloc_card drivers/memstick/core/memstick.c:420 [inline] memstick_check+0x72b/0x10d0 drivers/memstick/core/memstick.c:452 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 Host controller drivers (rtsx_usb_ms, jmb38x_ms, tifm_ms, r592) already implement their own hardware and bus timeouts, and callers in mspro_block and ms_block already rely on wait_for_completion() unconditionally. Replace wait_for_completion_timeout() with wait_for_completion() in memstick_set_rw_addr() and memstick_alloc_card() so that the card structure is never freed while an asynchronous request is in flight.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "b90f33ad9179c69658342323382bfed158f88cb9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "1c23da6f148089d59b3d3e9b2e7f1eefa927cab9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "a2f1aa3341f185ca52103dc4908647570b208855",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "c3ab92542475d59ae685cbb294e70ca4d0ba38e9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "810580cf60edc75c9891c2de3225e4cda78e4d9f",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "f2795c50144d528dabc2cf2fd53c0f0c63a823a1",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "3af81770e2011c6ac7bb597a4af2e4f3591f928c",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "baf8532a147d5b76681ce040e2c8f25a3f0e718d",
  "lessThan": "aa0a37b5024d921e96ac4f8f487c8bfbf1f1a582",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "2.6.25"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "2.6.25",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "5.10.273",
  "versionType": "semver",
  "lessThanOrEqual": "5.10.*"
}

{
  "status": "unaffected",
  "version": "5.15.224",
  "versionType": "semver",
  "lessThanOrEqual": "5.15.*"
}

{
  "status": "unaffected",
  "version": "6.1.191",
  "versionType": "semver",
  "lessThanOrEqual": "6.1.*"
}

{
  "status": "unaffected",
  "version": "6.6.160",
  "versionType": "semver",
  "lessThanOrEqual": "6.6.*"
}

{
  "status": "unaffected",
  "version": "6.12.113",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.57",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.11",
  "versionType": "semver",
  "lessThanOrEqual": "7.2.*"
}

{
  "status": "unaffected",
  "version": "7.3",
  "versionType": "original_commit_for_fix",
  "lessThanOrEqual": "*"
}

CVSS: оценки и векторы

Оценка CVSS отсутствует.

Источники и ссылки

{
  "cwes": [],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.706734+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.968441+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.968441+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.968441+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.706734+00:00"
  },
  "references": [
    "cve",
    "ghsa",
    "nvd"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.968441+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены02.11.2026, 00:13
2. Данные обновлены31.10.2026, 12:00
3. Данные обновлены30.10.2026, 20:51
4. Данные обновлены30.10.2026, 15:58
5. Данные обновлены29.10.2026, 12:47
6. Опубликована28.10.2026, 23:51

Личная заметка и статус

Другие CVE того же продукта