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CVE-2024-44954— ALSA: line6: Fix racy access to midibuf

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ALSA: line6组件存在midibuf的竞争条件漏洞。

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 705ececd1c60d0f5d6ef2a719008847883516970< 643293b68fbb6c03f5e907736498da17d43f0d81 affected
705ececd1c60d0f5d6ef2a719008847883516970< 40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5 affected
705ececd1c60d0f5d6ef2a719008847883516970< e7e7d2b180d8f297cea6db43ea72402fd33e1a29 affected
705ececd1c60d0f5d6ef2a719008847883516970< a54da4b787dcac60b598da69c9c0072812b8282d affected
705ececd1c60d0f5d6ef2a719008847883516970< c80f454a805443c274394b1db0d1ebf477abd94e affected
705ececd1c60d0f5d6ef2a719008847883516970< 535df7f896a568a8a1564114eaea49d002cb1747 affected
705ececd1c60d0f5d6ef2a719008847883516970< 51d87f11dd199bbc6a85982b088ff27bde53b48a affected
705ececd1c60d0f5d6ef2a719008847883516970< 15b7a03205b31bc5623378c190d22b7ff60026f1 affected
… +10 more rows
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I. Basic Information for CVE-2024-44954

Vulnerability Information
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Vulnerability Title
ALSA: line6: Fix racy access to midibuf
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: Fix racy access to midibuf There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here). This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.
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ALSA: line6组件存在midibuf的竞争条件漏洞。
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 705ececd1c60d0f5d6ef2a719008847883516970 ~ 643293b68fbb6c03f5e907736498da17d43f0d81 -
Linux Linux 2.6.30 -

II. Public POCs for CVE-2024-44954

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III. Intelligence Information for CVE-2024-44954

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Patches & Fixes for CVE-2024-44954 (2)

Same Patch Batch · Linux · 2024-09-04 · 58 CVEs total

CVE-2024-44984 10.0 CRITICAL bnxt_en: Fix double DMA unmapping for XDP_REDIRECT
CVE-2024-44985 9.8 CRITICAL ipv6: prevent possible UAF in ip6_xmit()
CVE-2024-44970 9.8 CRITICAL net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink
CVE-2024-44998 9.8 CRITICAL atm: idt77252: prevent use after free in dequeue_rx()
CVE-2024-44988 8.8 HIGH net: dsa: mv88e6xxx: Fix out-of-bound access
CVE-2024-44994 8.8 HIGH iommu: Restore lost return in iommu_report_device_fault()
CVE-2024-44986 8.1 HIGH ipv6: fix possible UAF in ip6_finish_output2()
CVE-2024-44973 8.1 HIGH mm, slub: do not call do_slab_free for kfence object
CVE-2024-44987 7.8 HIGH ipv6: prevent UAF in ip6_send_skb()
CVE-2024-44951 7.8 HIGH serial: sc16is7xx: fix TX fifo corruption
CVE-2024-45000 7.8 HIGH fs/netfs/fscache_cookie: add missing "n_accesses" check
CVE-2024-44959 7.8 HIGH tracefs: Use generic inode RCU for synchronizing freeing
CVE-2024-44949 7.8 HIGH parisc: fix a possible DMA corruption
CVE-2024-44966 7.8 HIGH binfmt_flat: Fix corruption when not offsetting data start
CVE-2024-44967 7.8 HIGH drm/mgag200: Bind I2C lifetime to DRM device
CVE-2024-44974 7.8 HIGH mptcp: pm: avoid possible UaF when selecting endp
CVE-2024-44995 7.8 HIGH net: hns3: fix a deadlock problem when config TC during resetting
CVE-2024-44978 7.8 HIGH drm/xe: Free job before xe_exec_queue_put
CVE-2024-44997 7.8 HIGH net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()
CVE-2024-44992 7.5 HIGH smb/client: avoid possible NULL dereference in cifs_free_subrequest()

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-44954

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