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CVE-2023-52893
gsmi: fix null-deref in gsmi_get_variable
Medium5.5EPSS 0.24%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < ee5763ef829bd923033510de6d1df7c73f085e4b
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < 32313c11bdc8a02c577abaf865be3664ab30410a
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < ffef77794fb5f1245c3249b86342bad2299accb5
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < eb0421d90f916dffe96b4c049ddf01c0c50620d2
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < 6646d769fdb0ce4318ef9afd127f8526d1ca8393
- affected 74c5b31c6618f01079212332b2e5f6c42f2d6307 – < a769b05eeed7accc4019a1ed9799dd72067f1ce8
- affected 3.0
- unaffected < 3.0
- unaffected 4.14.304 – ≤ 4.14.*
- unaffected 4.19.271 – ≤ 4.19.*
- unaffected 5.4.230 – ≤ 5.4.*
- unaffected 5.10.165 – ≤ 5.10.*
- unaffected 5.15.90 – ≤ 5.15.*
- unaffected 6.1.8 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (7)
- https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b (opens in a new tab)
- https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a (opens in a new tab)
- https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5 (opens in a new tab)
- https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd (opens in a new tab)
- https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2 (opens in a new tab)
- https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393 (opens in a new tab)
- https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2023-52893)Record last updated .