Ubuntu.comUB:CVE-2023-52893CVE-2023-52893
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < 5.4.0-147.164 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < 5.15.0-70.77 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1100.108 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1034.38 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1034.38~20.04.1 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1154.167~16.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1106.112 | UNKNOWN |
References
git.kernel.org/linus/a769b05eeed7accc4019a1ed9799dd72067f1ce8 (6.2-rc5)
git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a
git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393
git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8
git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd
git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2
git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b
git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5
launchpad.net/bugs/cve/CVE-2023-52893
nvd.nist.gov/vuln/detail/CVE-2023-52893
security-tracker.debian.org/tracker/CVE-2023-52893
www.cve.org/CVERecord?id=CVE-2023-52893
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