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CVE-2022-49326— rtl818x: Prevent using not initialized queues

AI Predicted 6.5 Difficulty: Moderate EPSS 0.29% · P22

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinuxfd6564fcdc0bfcd432e6e939f9538acc3905d08a< b5dca2cd3f0239512da808598b4e70557eb4c2a1affected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< d7e30dfc166d33470bba31a42f9bbc346e5409d5affected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< 9d5e96cc1f1720019ce27b127a31695148d38bb0affected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< b8ce58ab80faaea015c206382041ff3bcf5495ffaffected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< 769ec2a824deae2f1268dfda14999a4d14d0d0c5affected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< 6ad81ad0cf5744738ce94c8e64051ddd80a1734caffected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< 9ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d577affected
fd6564fcdc0bfcd432e6e939f9538acc3905d08a< 98e55b0b876bde3353f4e074883d66ecb55c65a3affected
… +12 more rows
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I. Basic Information for CVE-2022-49326

Vulnerability Information
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Vulnerability Title
rtl818x: Prevent using not initialized queues
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rtl818x: Prevent using not initialized queues Using not existing queues can panic the kernel with rtl8180/rtl8185 cards. Ignore the skb priority for those cards, they only have one tx queue. Pierre Asselin (pa@panix.com) reported the kernel crash in the Gentoo forum: https://forums.gentoo.org/viewtopic-t-1147832-postdays-0-postorder-asc-start-25.html He also confirmed that this patch fixes the issue. In summary this happened: After updating wpa_supplicant from 2.9 to 2.10 the kernel crashed with a "divide error: 0000" when connecting to an AP. Control port tx now tries to use IEEE80211_AC_VO for the priority, which wpa_supplicants starts to use in 2.10. Since only the rtl8187se part of the driver supports QoS, the priority of the skb is set to IEEE80211_AC_BE (2) by mac80211 for rtl8180/rtl8185 cards. rtl8180 is then unconditionally reading out the priority and finally crashes on drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c line 544 without this patch: idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries "ring->entries" is zero for rtl8180/rtl8185 cards, tx_ring[2] never got initialized.
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rtl818x使用未初始化的队列。
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 fd6564fcdc0bfcd432e6e939f9538acc3905d08a ~ b5dca2cd3f0239512da808598b4e70557eb4c2a1 -
LinuxLinux 3.15 -

II. Public POCs for CVE-2022-49326

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III. Intelligence Information for CVE-2022-49326

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Patches & Fixes for CVE-2022-49326 (9)

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-2022-494079.8 CRITICALdlm: fix plock invalid read
CVE-2022-493629.8 CRITICALNFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-492809.8 CRITICALNFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-493569.8 CRITICALSUNRPC: Trap RDMA segment overflows
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-2022-490939.8 CRITICALskbuff: fix coalescing for page_pool fragment recycling
CVE-2022-492609.8 CRITICALcrypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-491949.8 CRITICALnet: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-492019.8 CRITICALibmvnic: fix race between xmit and reset
CVE-2022-490589.1 CRITICALcifs: potential buffer overflow in handling symlinks
CVE-2022-495358.8 HIGHscsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-491598.8 HIGHscsi: qla2xxx: Implement ref count for SRB
CVE-2022-491388.8 HIGHBluetooth: hci_event: Ignore multiple conn complete events
CVE-2022-494798.8 HIGHmt76: fix tx status related use-after-free race on station removal
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-2022-491148.8 HIGHscsi: libfc: Fix use after free in fc_exch_abts_resp()

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-2022-49326

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