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CVE-2024-45001— net: mana: Fix RX buf alloc_size alignment and atomic op panic

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net:mana组件存在接收(RX)缓冲区大小对齐和原子操作异常的问题。

CVSS 7.5 · High EPSS 0.64% · P50

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 80f6215b450eb8e92d8b1f117abf5ecf867f963e< 65f20b174ec0172f2d6bcfd8533ab9c9e7e347fa affected
80f6215b450eb8e92d8b1f117abf5ecf867f963e< e6bea6a45f8a401f3d5a430bc81814f0cc8848cf affected
80f6215b450eb8e92d8b1f117abf5ecf867f963e< 32316f676b4ee87c0404d333d248ccf777f739bc affected
6.4 affected
< 6.4 unaffected
6.6.48≤ 6.6.* unaffected
6.10.7≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-45001

Vulnerability Information
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Vulnerability Title
net: mana: Fix RX buf alloc_size alignment and atomic op panic
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix RX buf alloc_size alignment and atomic op panic The MANA driver's RX buffer alloc_size is passed into napi_build_skb() to create SKB. skb_shinfo(skb) is located at the end of skb, and its alignment is affected by the alloc_size passed into napi_build_skb(). The size needs to be aligned properly for better performance and atomic operations. Otherwise, on ARM64 CPU, for certain MTU settings like 4000, atomic operations may panic on the skb_shinfo(skb)->dataref due to alignment fault. To fix this bug, add proper alignment to the alloc_size calculation. Sample panic info: [ 253.298819] Unable to handle kernel paging request at virtual address ffff000129ba5cce [ 253.300900] Mem abort info: [ 253.301760] ESR = 0x0000000096000021 [ 253.302825] EC = 0x25: DABT (current EL), IL = 32 bits [ 253.304268] SET = 0, FnV = 0 [ 253.305172] EA = 0, S1PTW = 0 [ 253.306103] FSC = 0x21: alignment fault Call trace: __skb_clone+0xfc/0x198 skb_clone+0x78/0xe0 raw6_local_deliver+0xfc/0x228 ip6_protocol_deliver_rcu+0x80/0x500 ip6_input_finish+0x48/0x80 ip6_input+0x48/0xc0 ip6_sublist_rcv_finish+0x50/0x78 ip6_sublist_rcv+0x1cc/0x2b8 ipv6_list_rcv+0x100/0x150 __netif_receive_skb_list_core+0x180/0x220 netif_receive_skb_list_internal+0x198/0x2a8 __napi_poll+0x138/0x250 net_rx_action+0x148/0x330 handle_softirqs+0x12c/0x3a0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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net:mana组件存在接收(RX)缓冲区大小对齐和原子操作异常的问题。
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 80f6215b450eb8e92d8b1f117abf5ecf867f963e ~ 65f20b174ec0172f2d6bcfd8533ab9c9e7e347fa -
Linux Linux 6.4 -

II. Public POCs for CVE-2024-45001

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III. Intelligence Information for CVE-2024-45001

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Patches & Fixes for CVE-2024-45001 (3)

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-2024-44998 9.8 CRITICAL atm: idt77252: prevent use after free in dequeue_rx()
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-2024-44994 8.8 HIGH iommu: Restore lost return in iommu_report_device_fault()
CVE-2024-44988 8.8 HIGH net: dsa: mv88e6xxx: Fix out-of-bound access
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-2024-44966 7.8 HIGH binfmt_flat: Fix corruption when not offsetting data start
CVE-2024-44949 7.8 HIGH parisc: fix a possible DMA corruption
CVE-2024-44959 7.8 HIGH tracefs: Use generic inode RCU for synchronizing freeing
CVE-2024-44954 7.8 HIGH ALSA: line6: Fix racy access to midibuf
CVE-2024-44951 7.8 HIGH serial: sc16is7xx: fix TX fifo corruption
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-2024-44978 7.8 HIGH drm/xe: Free job before xe_exec_queue_put
CVE-2024-44987 7.8 HIGH ipv6: prevent UAF in ip6_send_skb()
CVE-2024-44995 7.8 HIGH net: hns3: fix a deadlock problem when config TC during resetting
CVE-2024-44997 7.8 HIGH net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()
CVE-2024-45000 7.8 HIGH fs/netfs/fscache_cookie: add missing "n_accesses" check

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-2024-45001

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