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CVE-2026-53217— net: mvpp2: sync RX data at the hardware packet offset

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基金会开源的操作系统Linux所使用的内核。 Linux kernel 5.5版本存在安全漏洞，该漏洞源于RX数据同步范围错误，导致CPU可能在非一致性DMA系统上读取接收帧末端的过时缓存内容。

CVSS 8.6 · High EPSS 0.38% · P32

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e1921168bbd4810de4197446e52f652cd0dd9541< 60412bdd1b2576659eac23a23d2d9ff96228a643 affected
e1921168bbd4810de4197446e52f652cd0dd9541< 19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8 affected
e1921168bbd4810de4197446e52f652cd0dd9541< a3ad9b5767c89531fc7dae951b51b0933dcf7051 affected
e1921168bbd4810de4197446e52f652cd0dd9541< bede0f481b9137d73d1cf64309cbe4b94818a5d6 affected
e1921168bbd4810de4197446e52f652cd0dd9541< 23548007b3c66d628fc7d6b80d1e23be04ea10d9 affected
e1921168bbd4810de4197446e52f652cd0dd9541< a13199fa224e9f776f4005d5037df03aa9ea8f37 affected
e1921168bbd4810de4197446e52f652cd0dd9541< e302206ad84a407a7e5f3f6fe767ff5efaace689 affected
e1921168bbd4810de4197446e52f652cd0dd9541< 180235600934bef6add3be637c296d6cf3272e67 affected
… +10 more rows
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I. Basic Information for CVE-2026-53217

Vulnerability Information
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Vulnerability Title
net: mvpp2: sync RX data at the hardware packet offset
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: sync RX data at the hardware packet offset mvpp2 programs the RX queue packet offset, so hardware writes received data at dma_addr + MVPP2_SKB_HEADROOM. The current CPU sync starts at dma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the unused headroom and misses the same number of bytes at the packet tail. On non-coherent DMA systems this can leave the CPU reading stale cache contents for the end of the received frame. Use dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range offset so the sync covers the Marvell header and packet data actually written by hardware.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 5.5版本存在安全漏洞，该漏洞源于RX数据同步范围错误，导致CPU可能在非一致性DMA系统上读取接收帧末端的过时缓存内容。
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 e1921168bbd4810de4197446e52f652cd0dd9541 ~ 60412bdd1b2576659eac23a23d2d9ff96228a643 -
Linux Linux 5.5 -

II. Public POCs for CVE-2026-53217

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III. Intelligence Information for CVE-2026-53217

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Patches & Fixes for CVE-2026-53217 (8)

Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total

CVE-2026-53175 9.8 CRITICAL inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53176 9.8 CRITICAL IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
CVE-2026-53246 9.8 CRITICAL sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing
CVE-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
CVE-2026-53228 9.8 CRITICAL ipv6: sit: reload inner IPv6 header after GSO offloads
CVE-2026-53151 9.8 CRITICAL rxrpc: Fix the ACK parser to extract the SACK table for parsing
CVE-2026-53221 9.8 CRITICAL ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
CVE-2026-53216 9.8 CRITICAL net: mvpp2: limit XDP frame size to the RX buffer
CVE-2026-53215 9.8 CRITICAL net: mvpp2: refill RX buffers before XDP or skb use
CVE-2026-53260 9.8 CRITICAL tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req().
CVE-2026-53131 9.4 CRITICAL netfilter: require Ethernet MAC header before using eth_hdr()
CVE-2026-53186 9.1 CRITICAL RDMA/srp: bound SRP_RSP sense copy by the received length
CVE-2026-53224 9.1 CRITICAL sctp: validate embedded INIT chunk and address list lengths in cookie
CVE-2026-53225 9.1 CRITICAL sctp: fix uninit-value in __sctp_rcv_asconf_lookup()
CVE-2026-53248 8.8 HIGH net: airoha: Fix use-after-free in metadata dst teardown
CVE-2026-53275 8.8 HIGH ipv6: mcast: Fix use-after-free when processing MLD queries
CVE-2026-53198 8.8 HIGH ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL
CVE-2026-53170 8.8 HIGH accel/ethosu: reject DMA commands with uninitialized length
CVE-2026-53232 8.8 HIGH net: phy: clean the sfp upstream if phy probing fails
CVE-2026-53159 8.8 HIGH misc: fastrpc: fix DMA address corruption due to find_vma misuse

Showing top 20 of 146 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53217

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