CVE-2021-47141: gve: Add NULL pointer checks when freeing irqs.
Vulnerability summary
CVE-2021-47141 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.2% 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 6 · Related 6Timeline
- 25-03-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: gve: Add NULL pointer checks when freeing irqs. When freeing notification blocks, we index priv->msix_vectors. If we failed to allocate priv->msix_vectors (see abort_with_msix_vectors) this could lead to a NULL pointer dereference if the driver is unloaded.
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
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% 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.
Ubuntu83 products
- linux< 5.4.0-80.90
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1054.57
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 893ce44df56580fb878ca5af9c4a5fd87567da50, < 821149ee88c206fa37e79c1868cc270518484876 | ≥ 893ce44df56580fb878ca5af9c4a5fd87567da50, < da21a35c00ff1a1794d4f166d3b3fa8db4d0f6fb | ≥ 893ce44df56580fb878ca5af9c4a5fd87567da50, < 5278c75266c5094d3c0958793bf12fc90300e580 | ≥ 893ce44df56580fb878ca5af9c4a5fd87567da50, < 5218e919c8d06279884aa0baf76778a6817d5b93 | 5.3
- linux_kernel≥ 5.3, < 5.4.124 | ≥ 5.5, < 5.10.42 | ≥ 5.11, < 5.12.9 | 5.13:rc1 | 5.13:rc2 | 5.13:rc3
Debian1 product
- linux< 5.14.6-1
3 vendors · 86 products
