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CVE-2022-49478— media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init

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pvr2_i2c_core_init中缺少对hdw->unit_number的验证，导致数组越界。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< 2e004fe914b243db41fa96f9e583385f360ea58e affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< a3660e06675bccec4bf149c7229ea1d491ba10d7 affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< 1310fc3538dcc375a2f46ef0a438512c2ca32827 affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< a3304766d9384886e6d3092c776273526947a2e9 affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< 3309c2c574e13b21b44729f5bdbf21f60189b79a affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< f99a8b1ec0eddc2931aeaa4f490277a15b39f511 affected
d855497edbfbf9e19a17f4a1154bca69cb4bd9ba< 24e807541e4a9263ed928e6ae3498de3ad43bd1e affected
… +12 more rows
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I. Basic Information for CVE-2022-49478

Vulnerability Information
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Vulnerability Title
media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.
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pvr2_i2c_core_init中缺少对hdw->unit_number的验证，导致数组越界。
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 d855497edbfbf9e19a17f4a1154bca69cb4bd9ba ~ 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 -
Linux Linux 2.6.18 -

II. Public POCs for CVE-2022-49478

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III. Intelligence Information for CVE-2022-49478

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Patches & Fixes for CVE-2022-49478 (9)

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

CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49362 9.8 CRITICAL NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49201 9.8 CRITICAL ibmvnic: fix race between xmit and reset
CVE-2022-49194 9.8 CRITICAL net: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-49093 9.8 CRITICAL skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49260 9.8 CRITICAL crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49418 9.8 CRITICAL NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49094 9.8 CRITICAL net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49356 9.8 CRITICAL SUNRPC: Trap RDMA segment overflows
CVE-2022-49058 9.1 CRITICAL cifs: potential buffer overflow in handling symlinks
CVE-2022-49328 8.8 HIGH mt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-49114 8.8 HIGH scsi: libfc: Fix use after free in fc_exch_abts_resp()
CVE-2022-49535 8.8 HIGH scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-49470 8.8 HIGH Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-49111 8.8 HIGH Bluetooth: Fix use after free in hci_send_acl
CVE-2022-49471 8.8 HIGH rtw89: cfo: check mac_id to avoid out-of-bounds
CVE-2022-49519 8.8 HIGH ath10k: 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-2022-49478

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