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CVE-2024-44949— parisc: fix a possible DMA 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parisc架构存在可能的DMA数据损坏漏洞。

CVSS 7.8 · High EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux a01fece2e4185ac173abd16d10304d73d47ebf00< 00baca74fb5879e5f9034b6156671301f500f8ee affected
a01fece2e4185ac173abd16d10304d73d47ebf00< 642a0b7453daff0295310774016fcb56d1f5bc7f affected
a01fece2e4185ac173abd16d10304d73d47ebf00< 533de2f470baac40d3bf622fe631f15231a03c9f affected
a01fece2e4185ac173abd16d10304d73d47ebf00< 7ae04ba36b381bffe2471eff3a93edced843240f affected
4.4 affected
< 4.4 unaffected
6.1.119≤ 6.1.* unaffected
6.6.46≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-44949

Vulnerability Information
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Vulnerability Title
parisc: fix a possible DMA corruption
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: parisc: fix a possible DMA corruption ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be possible that two unrelated 16-byte allocations share a cache line. If one of these allocations is written using DMA and the other is written using cached write, the value that was written with DMA may be corrupted. This commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 - that's the largest possible cache line size. As different parisc microarchitectures have different cache line size, we define arch_slab_minalign(), cache_line_size() and dma_get_cache_alignment() so that the kernel may tune slab cache parameters dynamically, based on the detected cache line size.
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parisc架构存在可能的DMA数据损坏漏洞。
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 a01fece2e4185ac173abd16d10304d73d47ebf00 ~ 00baca74fb5879e5f9034b6156671301f500f8ee -
Linux Linux 4.4 -

II. Public POCs for CVE-2024-44949

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III. Intelligence Information for CVE-2024-44949

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Patches & Fixes for CVE-2024-44949 (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-2024-44954 7.8 HIGH ALSA: line6: Fix racy access to midibuf
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-2024-44951 7.8 HIGH serial: sc16is7xx: fix TX fifo 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-2024-45001 7.5 HIGH net: mana: Fix RX buf alloc_size alignment and atomic op panic

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-2024-44949

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