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CVE-2022-49654— net: dsa: qca8k: reset cpu port on MTU change

AI Predicted 5.5 Difficulty: Easy EPSS 0.25% · P17

Possible ATT&CK Techniques 1AI

T1562

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinuxf58d2598cf70d41f73e761b62a114d2e8f94a676< 188c798f3c2554fa0d7147e9b97baf144b817019affected
f58d2598cf70d41f73e761b62a114d2e8f94a676< 1993f5a06736ada59dd54b50dc96755a38796ee5affected
f58d2598cf70d41f73e761b62a114d2e8f94a676< 386228c694bf1e7a7688e44412cb33500b0ac585affected
5.9affected
< 5.9unaffected
5.15.54≤ 5.15.*unaffected
5.18.11≤ 5.18.*unaffected
5.19≤ *unaffected
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I. Basic Information for CVE-2022-49654

Vulnerability Information
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Vulnerability Title
net: dsa: qca8k: reset cpu port on MTU change
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: qca8k: reset cpu port on MTU change It was discovered that the Documentation lacks of a fundamental detail on how to correctly change the MAX_FRAME_SIZE of the switch. In fact if the MAX_FRAME_SIZE is changed while the cpu port is on, the switch panics and cease to send any packet. This cause the mgmt ethernet system to not receive any packet (the slow fallback still works) and makes the device not reachable. To recover from this a switch reset is required. To correctly handle this, turn off the cpu ports before changing the MAX_FRAME_SIZE and turn on again after the value is applied.
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qca8k交换机在MTU更改时未重置cpu端口。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux f58d2598cf70d41f73e761b62a114d2e8f94a676 ~ 188c798f3c2554fa0d7147e9b97baf144b817019 -
LinuxLinux 5.9 -

II. Public POCs for CVE-2022-49654

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III. Intelligence Information for CVE-2022-49654

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Patches & Fixes for CVE-2022-49654 (3)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-491499.8 CRITICALrxrpc: Fix call timer start racing with call destruction
CVE-2022-495619.8 CRITICALnetfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-493629.8 CRITICALNFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-492019.8 CRITICALibmvnic: fix race between xmit and reset
CVE-2022-491949.8 CRITICALnet: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-490939.8 CRITICALskbuff: fix coalescing for page_pool fragment recycling
CVE-2022-492609.8 CRITICALcrypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-494189.8 CRITICALNFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-490949.8 CRITICALnet/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-494079.8 CRITICALdlm: fix plock invalid read
CVE-2022-492809.8 CRITICALNFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-493569.8 CRITICALSUNRPC: Trap RDMA segment overflows
CVE-2022-490589.1 CRITICALcifs: potential buffer overflow in handling symlinks
CVE-2022-495008.8 HIGHwl1251: dynamically allocate memory used for DMA
CVE-2022-495358.8 HIGHscsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-491148.8 HIGHscsi: libfc: Fix use after free in fc_exch_abts_resp()
CVE-2022-494708.8 HIGHBluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-491118.8 HIGHBluetooth: Fix use after free in hci_send_acl
CVE-2022-492388.8 HIGHath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-495198.8 HIGHath10k: skip ath10k_halt during suspend for driver state RESTARTING

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49654

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