CVE-2022-48879: efi: fix NULL-deref in init error path
Vulnerability summary
CVE-2022-48879 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% 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 5 · Related 5Timeline
- 21-08-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in the unlikely event that EFI initialisation fails to avoid dereferencing a NULL pointer.
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
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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.
Ubuntu108 products
- linux< 5.4.0-144.161 | < 5.15.0-70.77
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1097.105 | < 5.15.0-1034.38
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 2ff3c97b47521d6700cc6485c7935908dcd2c27c, < 585a0b2b3ae7903c6abee3087d09c69e955a7794 | ≥ 5167f194da6947e19a3e970485ee3ccb44f7958d, < 5fcf75a8a4c3e7ee9122d143684083c9faf20452 | ≥ 98086df8b70c06234a8f4290c46064e44dafa0ed, < 4ca71bc0e1995d15486cd7b60845602a28399cb5 | ≥ 98086df8b70c06234a8f4290c46064e44dafa0ed, < e2ea55564229e4bea1474af15b111b3a3043b76f | ≥ 98086df8b70c06234a8f4290c46064e44dafa0ed, < adc96d30f6503d30dc68670c013716f1d9fcc747 | ≥ 98086df8b70c06234a8f4290c46064e44dafa0ed, < 703c13fe3c9af557d312f5895ed6a5fda2711104 | f591a42b8f9a9d20e01d0462f4f55d2176ac52ec | e6584124b9823151ef586d10dedf565ade50cea6 | ≥ 4.19.142, < 4.19.270 | ≥ 5.4.61, < 5.4.229 | ≥ 5.7.18, < 5.8 | ≥ 5.8.4, < 5.9 | 5.9
- linux_kernel≥ 4.19.142, < 4.19.270 | ≥ 5.4.61, < 5.4.229 | ≥ 5.9, < 5.10.164 | ≥ 5.11, < 5.15.89 | ≥ 5.16, < 6.1.7
Debian1 product
- linux< 6.1.7-1
3 vendors · 111 products
