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CVE-2025-21998

firmware: qcom: uefisecapp: fix efivars registration race

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: uefisecapp: fix efivars registration race Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access. Make sure that all resources have been set up before registering the efivars.

Timeline

  1. ID reserved

    By Linux

  2. · 3 months later

    Published

  3. · 13 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-21998, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.14% · top 97% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Affected products

  • Linux · Linux

    • affected 6612103ec35af6058bb85ab24dae28e119b3c055 – < c4e37b381a7a243c298a4858fc0a5a74e737c79a
    • affected 6612103ec35af6058bb85ab24dae28e119b3c055 – < f15a2b96a0e41c426c63a932d0e63cde7b9784aa
    • affected 6612103ec35af6058bb85ab24dae28e119b3c055 – < da8d493a80993972c427002684d0742560f3be4a

  • Linux · Linux

    • affected 6.11
    • unaffected < 6.11
    • unaffected 6.12.21 – ≤ 6.12.*
    • unaffected 6.13.9 – ≤ 6.13.*
    • unaffected 6.14 – ≤ *

References

3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .