CVE-2022-50142: intel_th: msu: Fix vmalloced buffers
Vulnerability summary
CVE-2022-50142 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 18-06-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: intel_th: msu: Fix vmalloced buffers After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") there's a chance of DMA buffer getting allocated via vmalloc(), which messes up the mmapping code: > RIP: msc_mmap_fault [intel_th_msu] > Call Trace: > <TASK> > __do_fault > do_fault ... Fix this by accounting for vmalloc possibility.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
10%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.20% 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.
Ubuntu107 products
- linux< 5.4.0-132.148 | < 5.15.0-53.59
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1089.97 | < 5.15.0-1023.27
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ ba39bd8306057fb343dfb75d93a76d824b625236, < b5d924cb4c7b952eaa61622f14427723a78137a3 | ≥ ba39bd8306057fb343dfb75d93a76d824b625236, < 6ae2881c1d1fa0e33f4763b7c786f8ef05a9c828 | ≥ ba39bd8306057fb343dfb75d93a76d824b625236, < 566887bad7ff2297d6b3f9659c702ba075f3d62d | ≥ ba39bd8306057fb343dfb75d93a76d824b625236, < 0ed72c6bc632cbf8d979ac60f982ff84b7bb610a | ≥ ba39bd8306057fb343dfb75d93a76d824b625236, < 4914c50670b6a531e2cb17cd984cc565b4681312 | ≥ ba39bd8306057fb343dfb75d93a76d824b625236, < ac12ad3ccf6d386e64a9d6a890595a2509d24edd | 5.2
- linux_kernel≥ 5.2, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2
Debian1 product
- linux< 6.0.2-1
3 vendors · 110 products
