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CVE-2026-31522— HID: magicmouse: avoid memory leak in magicmouse_report_fixup()

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于magicmouse_report_fixup返回新分配缓冲区但未释放，可能导致内存泄漏。

AI Predicted 3.3 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 19

VendorProduct Version RangeStatus
Linux Linux e6ad399596bd234be4722022146e33e15c7e424d< 579c4c9857acdc8380fa99803f355f878bd766cb affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< d84c21aabaab517b9aaf9bc1d785922cb9db2f31 affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< 7edfe4346b052b708645d0acc0f186425766b785 affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< 79e5dcc95d9abed6f8203cfd529f4ec71f0e505d affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< 136f605e246b4bfe7ac2259471d1ff814aed0084 affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< fa95b0146358b49f9858139b67314591fd5871b0 affected
0b91b4e4dae63cd43871fc2012370b86ee588f91< 91e8c6e601bdc1ccdf886479b6513c01c7e51c2c affected
c394bd1bc8537e61593b6b6799e01495c7cf9008 affected
… +11 more rows
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I. Basic Information for CVE-2026-31522

Vulnerability Information
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Vulnerability Title
HID: magicmouse: avoid memory leak in magicmouse_report_fixup()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: avoid memory leak in magicmouse_report_fixup() The magicmouse_report_fixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it. The caller of report_fixup() does not take ownership of the returned pointer, but it *is* permitted to return a sub-portion of the input rdesc, whose lifetime is managed by the caller.
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于magicmouse_report_fixup返回新分配缓冲区但未释放，可能导致内存泄漏。
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 e6ad399596bd234be4722022146e33e15c7e424d ~ 579c4c9857acdc8380fa99803f355f878bd766cb -
Linux Linux 5.17 -

II. Public POCs for CVE-2026-31522

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III. Intelligence Information for CVE-2026-31522

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Same Patch Batch · Linux · 2026-04-22 · 100 CVEs total

CVE-2026-31463 9.8 CRITICAL iomap: fix invalid folio access when i_blkbits differs from I/O granularity
CVE-2026-31444 9.8 CRITICAL ksmbd: fix use-after-free and NULL deref in smb_grant_oplock()
CVE-2026-31501 9.8 CRITICAL net: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path
CVE-2026-31436 9.8 CRITICAL dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
CVE-2026-31478 9.8 CRITICAL ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()
CVE-2026-31448 9.4 CRITICAL ext4: avoid infinite loops caused by residual data
CVE-2026-31450 8.8 HIGH ext4: publish jinode after initialization
CVE-2026-31432 8.8 HIGH ksmbd: fix OOB write in QUERY_INFO for compound requests
CVE-2026-31433 8.8 HIGH ksmbd: fix potencial OOB in get_file_all_info() for compound requests
CVE-2026-31435 8.8 HIGH netfs: Fix read abandonment during retry
CVE-2026-31476 8.2 HIGH ksmbd: do not expire session on binding failure
CVE-2026-31464 8.1 HIGH scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()
CVE-2026-31513 8.1 HIGH Bluetooth: L2CAP: Fix stack-out-of-bounds read in l2cap_ecred_conn_req
CVE-2026-31446 7.8 HIGH ext4: fix use-after-free in update_super_work when racing with umount
CVE-2026-31449 7.8 HIGH ext4: validate p_idx bounds in ext4_ext_correct_indexes
CVE-2026-31502 7.8 HIGH team: fix header_ops type confusion with non-Ethernet ports
CVE-2026-31431 7.8 HIGH crypto: algif_aead - Revert to operating out-of-place
CVE-2026-31488 7.8 HIGH drm/amd/display: Do not skip unrelated mode changes in DSC validation
CVE-2026-31490 7.8 HIGH drm/xe/pf: Fix use-after-free in migration restore
CVE-2026-31454 7.8 HIGH xfs: save ailp before dropping the AIL lock in push callbacks

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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