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CVE-2026-72181— mips: sched: Fix CPUMASK_OFFSTACK memory corruption

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 2.6.23版本存在安全漏洞，该漏洞源于内存管理缺陷，当CONFIG_CPUMASK_OFFSTACK启用时，sizeof(new_mask)被评估为指针大小，导致copy_from_user()覆盖掩码指针，可能造成内存损坏。

CVSS 7.8 · High EPSS 0.16% · P6

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 295cbf6d63165fe4253cf1d9ceadcda47a318b48< 2f7730c03a9deea3ba7a1c980070d363b4ea2046 affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< d20ee42f8226607b5693b2bc2f115ca2d270221a affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< 15ba8053fe4162c933855f1676fb321cdb6251c7 affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< 3446ffb5d03c36f9ce88ede7ca5be319a2968d96 affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< 87a56c1e8e36d06ebe8640432f911538ded7827d affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< 1caee6e084a96ada94658f261ced377d85af3f03 affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< a1dd41d00c57efb1fbc6f361c5f48c9d00cca51c affected
295cbf6d63165fe4253cf1d9ceadcda47a318b48< 98e37db4a34d3af3fb2f4648295c25b5e40b20e3 affected
… +10 more rows
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I. Basic Information for CVE-2026-72181

Vulnerability Information
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Vulnerability Title
mips: sched: Fix CPUMASK_OFFSTACK memory corruption
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mips: sched: Fix CPUMASK_OFFSTACK memory corruption This patch addresses a critical memory management flaw. When CONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer. Consequently, sizeof(new_mask) evaluates to the pointer size, causing copy_from_user() to clobber the mask pointer. Furthermore, the old logic performed copy_from_user() before allocating the mask. Fix this by allocating new_mask first. To handle variable-sized user masks correctly, use cpumask_size() to truncate overly large user masks or pad undersized masks with zeros before copying the data directly into the allocated buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 2.6.23版本存在安全漏洞，该漏洞源于内存管理缺陷，当CONFIG_CPUMASK_OFFSTACK启用时，sizeof(new_mask)被评估为指针大小，导致copy_from_user()覆盖掩码指针，可能造成内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 295cbf6d63165fe4253cf1d9ceadcda47a318b48 ~ 2f7730c03a9deea3ba7a1c980070d363b4ea2046 -
Linux Linux 2.6.23 -

II. Public POCs for CVE-2026-72181

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III. Intelligence Information for CVE-2026-72181

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Patches & Fixes for CVE-2026-72181 (8)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72381 9.8 CRITICAL ksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-72393 9.8 CRITICAL eth: fbnic: don't cache shinfo across skb realloc
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-74406 9.8 CRITICAL vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-72355 9.8 CRITICAL netfs: Fix barriering when walking subrequest list
CVE-2026-72339 9.8 CRITICAL qede: fix off-by-one in BD ring consumption on build_skb failure
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-72351 9.8 CRITICAL gue: validate REMCSUM private option length
CVE-2026-72366 9.8 CRITICAL netfs: Fix netfs_create_write_req() to handle async cache object creation
CVE-2026-72098 9.8 CRITICAL dm-verity: fix buffer overflow in FEC calculation
CVE-2026-72083 9.8 CRITICAL scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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