CVE-2023-52893
published 2024-08-21CVE-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…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.1th percentile
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.
Affected
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.8-1 (bookworm) | linux 6.1.8-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < ee5763ef829bd923033510de6d1df7c73f085e4b | ee5763ef829bd923033510de6d1df7c73f085e4b |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < 32313c11bdc8a02c577abaf865be3664ab30410a | 32313c11bdc8a02c577abaf865be3664ab30410a |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < ffef77794fb5f1245c3249b86342bad2299accb5 | ffef77794fb5f1245c3249b86342bad2299accb5 |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd | ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < eb0421d90f916dffe96b4c049ddf01c0c50620d2 | eb0421d90f916dffe96b4c049ddf01c0c50620d2 |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < 6646d769fdb0ce4318ef9afd127f8526d1ca8393 | 6646d769fdb0ce4318ef9afd127f8526d1ca8393 |
| linux | linux | >= 74c5b31c6618f01079212332b2e5f6c42f2d6307 < a769b05eeed7accc4019a1ed9799dd72067f1ce8 | a769b05eeed7accc4019a1ed9799dd72067f1ce8 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.8-1 | 6.1.8-1 |
| linux | linux_kernel | >= 0 < 6.1.8-1 | 6.1.8-1 |
| linux | linux_kernel | >= 0 < 6.1.8-1 | 6.1.8-1 |
| linux | linux_kernel | >= 3.0 < 4.14.304 | 4.14.304 |
| linux | linux_kernel | >= 4.15 < 4.19.271 | 4.19.271 |
| linux | linux_kernel | >= 4.20 < 5.4.230 | 5.4.230 |
| linux | linux_kernel | >= 5.11 < 5.15.90 | 5.15.90 |
| linux | linux_kernel | >= 5.16 < 6.1.8 | 6.1.8 |
| linux | linux_kernel | >= 5.5 < 5.10.165 | 5.10.165 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: gsmi: fix null-deref in gsmi_get_variable
vendor_redhat·2024-08-21·CVSS 5.5
CVE-2023-52893 [MEDIUM] CWE-476 kernel: gsmi: fix null-deref in gsmi_get_variable
kernel: gsmi: fix null-deref in gsmi_get_variable
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.
A vulnerability was found in the Linux kernel's gsmi.c firmware driver in the gsmi_get_variable() function where a NULL dereference of the attr variable is possible due to improper checks. This is caused by a previous commit which introduced the possibility for the get_variable() function to return attr=NULL. This vulnerability could potentially lead to system instability.
Statement
Debian
CVE-2023-52893: linux - In the Linux kernel, the following vulnerability has been resolved: gsmi: fix n...
vendor_debian·2023·CVSS 5.5
CVE-2023-52893 [MEDIUM] CVE-2023-52893: linux - In the Linux kernel, the following vulnerability has been resolved: gsmi: fix n...
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.
Scope: local
bookworm: resolved (fixed in 6.1.8-1)
bullseye: resolved (fixed in 5.10.178-1)
forky: resolved (fixed in 6.1.8-1)
sid: resolved (fixed in 6.1.8-1)
trixie: resolved (fixed in 6.1.8-1)
OSV
CVE-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 fetchin
osv·2024-08-21·CVSS 5.5
CVE-2023-52893 [MEDIUM] CVE-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 fetchin
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.
GHSA
GHSA-5c27-9gp6-68q5: In the Linux kernel, the following vulnerability has been resolved:
gsmi: fix null-deref in gsmi_get_variable
We can get EFI variables without fetch
ghsa_unreviewed·2024-08-21
CVE-2023-52893 [MEDIUM] CWE-476 GHSA-5c27-9gp6-68q5: In the Linux kernel, the following vulnerability has been resolved:
gsmi: fix null-deref in gsmi_get_variable
We can get EFI variables without fetch
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410ahttps://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfdhttps://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4bhttps://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5
2024-08-21
Published