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CVE-2026-93150— cgroup/cpuset: Make nr_deadline_tasks an atomic_t

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： cgroup/cpuset：将 nr_deadline_tasks 改为原子类型（atomic_t） cpuset 结构体中的 变量是由提交 6c24849f5515（"sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets"）引入的。sashiko [1] 报告称， 当前可以在 函数中于 保护下被修改，也可以在 函数中于 保护下被修改。因此，如果这两个更新同时发生， 变量可能会发生数据损坏，从而导致后续操作

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P10

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6c24849f5515e4966d94fa5279bdff4acf2e9489< e422b32e6a57269ca8164c60674a78bee85cf5fb affected
6c24849f5515e4966d94fa5279bdff4acf2e9489< e5965ae3f7c918151b87e5c925b7978afbeaf638 affected
6c24849f5515e4966d94fa5279bdff4acf2e9489< 78d9daf5e13ad1448b7dfebac949936710ec7565 affected
6c24849f5515e4966d94fa5279bdff4acf2e9489< 95220e1f18f6321008f021abc7d6f581f64bcb82 affected
5ac05ce5684315d0e71194a63febaf33921c3268 affected
43d8cbfefa7c59bd3b5fe184535eca476d45304e affected
d1b4262b78cc7638642833252ae92fc586854ffb affected
74fac5bb0d375d6b8f5e7997925063c509089c9c affected
… +10 more rows
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I. Basic Information for CVE-2026-93150

Vulnerability Information
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Vulnerability Title
cgroup/cpuset: Make nr_deadline_tasks an atomic_t
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: Make nr_deadline_tasks an atomic_t The nr_deadline_tasks variable in the cpuset structure was introduced by commit 6c24849f5515 ("sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets"). It is reported by sashiko [1] that nr_deadline_tasks can currently be modified by inc_dl_tasks_cs() under rq->lock and by cpuset_attach() under cpuset_mutex. So if both updates happen simultaneously, the nr_deadline_tasks variable can be corrupted leading to incorrect operations down the road. Fix that by changing its type to atomic_t so that nr_deadline_tasks are always atomically updated. This fix patch is a low hanging fruit. It can handle some of the races between a concurrent sched_setscheduler() and cpuset_can_attach()/cpuset_attach() calls, but not all of them like the other issue raised by sashiko [2]. This will be handled hopefully in a future follow up patch. [1] https://sashiko.dev/#/patchset/20260626181923.133658-1-longman%40redhat.com [2] https://sashiko.dev/#/patchset/20260630033344.352702-1-longman%40redhat.com
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6c24849f5515e4966d94fa5279bdff4acf2e9489 ~ e422b32e6a57269ca8164c60674a78bee85cf5fb -
Linux Linux 6.5 -

II. Public POCs for CVE-2026-93150

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III. Intelligence Information for CVE-2026-93150

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Patches & Fixes for CVE-2026-93150 (4)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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