7.8

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

Modified
AliasesUBUNTU-CVE-2022-49478DEBIAN-CVE-2022-49478
Published 26-02-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49478 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 21.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2025:01600-1SUSE-SU-2025:1027-1SUSE-SU-2025:1176-1SUSE-SU-2025:1183-1SUSE-SU-2025:1194-1SUSE-SU-2025:1241-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.29% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu111 products
  • linuxAll versions (No fix recorded) | < 4.15.0-192.203 | < 5.4.0-126.142 | < 5.15.0-47.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1140.151 | < 5.4.0-1085.92 | < 5.15.0-1019.23
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 2e004fe914b243db41fa96f9e583385f360ea58e | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < a3660e06675bccec4bf149c7229ea1d491ba10d7 | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 1310fc3538dcc375a2f46ef0a438512c2ca32827 | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < a3304766d9384886e6d3092c776273526947a2e9 | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 3309c2c574e13b21b44729f5bdbf21f60189b79a | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < f99a8b1ec0eddc2931aeaa4f490277a15b39f511 | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 24e807541e4a9263ed928e6ae3498de3ad43bd1e | ≥ d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 471bec68457aaf981add77b4f590d65dd7da1059 | 2.6.18
  • linux_kernel≥ 2.6.18, < 4.9.318 | ≥ 4.10, < 4.14.283 | ≥ 4.15, < 4.19.247 | ≥ 4.20, < 5.4.198 | ≥ 5.5, < 5.10.121 | ≥ 5.11, < 5.15.46 | ≥ 5.16, < 5.17.14 | ≥ 5.18, < 5.18.3
Debian1 product
  • linux< 5.18.5-1

3 vendors · 114 products

References

13 links
Show all 13 references