CVE-2022-48949: igb: Initialize mailbox message for VF reset
Vulnerability summary
CVE-2022-48949 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.8% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: igb: Initialize mailbox message for VF reset When a MAC address is not assigned to the VF, that portion of the message sent to the VF is not set. The memory, however, is allocated from the stack meaning that information may be leaked to the VM. Initialize the message buffer to 0 so that no information is passed to the VM in this case.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu113 products
- linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-67.74
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1031.35
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < a6629659af3f5c6a91e3914ea62554c975ab77f4 | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < ef1d739dd1f362aec081278ff92f943c31eb177a | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < c581439a977545d61849a72e8ed631cfc8a2a3c1 | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < f2479c3daaabccbac6c343a737615d0c595c6dc4 | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < 367e1e3399dbc56fc669740c4ab60e35da632b0e | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < 51fd5ede7ed42f272682a0c33d6f0767b3484a3d | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < c383c7c35c7bc15e07a04eefa060a8a80cbeae29 | ≥ 6ddbc4cf1f4d5a3a58b4223c80881f299dae3774, < de5dc44370fbd6b46bd7f1a1e00369be54a041c8 | 4.0
- linux_kernelEOL≥ 4.0, < 4.14.303 | ≥ 4.15, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.161 | ≥ 5.11, < 5.15.85 | ≥ 5.16, < 6.0.15 | 6.1 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6 | 6.1:rc7 | 6.1:rc8 | 6.11
Debian1 product
- linux< 6.1.4-1
3 vendors · 116 products
