CVE-2022-49122: dm ioctl: prevent potential spectre v1 gadget
Vulnerability summary
CVE-2022-49122 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.5% 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 14 · Related 7Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: dm ioctl: prevent potential spectre v1 gadget It appears like cmd could be a Spectre v1 gadget as it's supplied by a user and used as an array index. Prevent the contents of kernel memory from being leaked to userspace via speculative execution by using array_index_nospec.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.31%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.31% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu107 products
- linuxAll versions (No fix recorded) | < 4.15.0-189.200 | < 5.4.0-117.132 | < 5.15.0-37.39
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1137.148 | < 5.4.0-1078.84 | < 5.15.0-1011.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 76c94651005f58885facf9c973007f5ea01ab01f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 58880025e3362024f6d8ea01cb0c7a5df6c84ba6 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7ae2c5b89da3cfaf856df880af27d3bb32a74b3d | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0320bac5801b31407200227173205d017488f140 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 71c8df33fd777c7628f6fbc09b14e84806c55914 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 02cc46f397eb3691c56affbd5073e54f7a82ac32 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 44e6cb3ab177faae840bb2c1ebda9a2539876184 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < dd86064417de828ff2102ddc6049c829bf7585b4 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cd9c88da171a62c4b0f1c70e50c75845969fbc18 | 2.6.12
- linux_kernel< 4.9.311 | ≥ 4.10, < 4.14.276 | ≥ 4.15, < 4.19.238 | ≥ 4.20, < 5.4.189 | ≥ 5.5, < 5.10.111 | ≥ 5.11, < 5.15.34 | ≥ 5.16, < 5.16.20 | ≥ 5.17, < 5.17.3
Debian1 product
- linux< 5.17.3-1
3 vendors · 110 products
