CVE-2023-52976
published 2025-03-27CVE-2023-52976: In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.27%
19.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.
This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[ardb: return -ENOMEM instead of breaking out of the loop]
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.11-1 (bookworm) | linux 6.1.11-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 18df7577adae6c6c778bf774b3aebcacbc1fb439 < d92a25627bcdf264183670da73c9a60c0bac327e | d92a25627bcdf264183670da73c9a60c0bac327e |
| linux | linux | >= 18df7577adae6c6c778bf774b3aebcacbc1fb439 < 87d4ff18738fd71e7e3c10827c80257da6283697 | 87d4ff18738fd71e7e3c10827c80257da6283697 |
| linux | linux | >= 18df7577adae6c6c778bf774b3aebcacbc1fb439 < d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c | d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c |
| linux | linux | >= 18df7577adae6c6c778bf774b3aebcacbc1fb439 < a2e6a9ff89f13666a1c3ff7195612ab949ea9afc | a2e6a9ff89f13666a1c3ff7195612ab949ea9afc |
| linux | linux | >= 18df7577adae6c6c778bf774b3aebcacbc1fb439 < 966d47e1f27c45507c5df82b2a2157e5a4fd3909 | 966d47e1f27c45507c5df82b2a2157e5a4fd3909 |
| linux | linux | >= 5.1.16 < 5.2 | 5.2 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 5.1.16 < 5.4.232 | 5.4.232 |
| linux | linux_kernel | >= 5.11 < 5.15.93 | 5.15.93 |
| linux | linux_kernel | >= 5.16 < 6.1.11 | 6.1.11 |
| linux | linux_kernel | >= 5.5 < 5.10.168 | 5.10.168 |
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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OSV
CVE-2023-52976: In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a li
osv·2025-03-27·CVSS 5.5
CVE-2023-52976 [MEDIUM] CVE-2023-52976: In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a li
In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]
GHSA
GHSA-fx88-897w-ccgj: In the Linux kernel, the following vulnerability has been resolved:
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a
ghsa_unreviewed·2025-03-27
CVE-2023-52976 [MEDIUM] CWE-476 GHSA-fx88-897w-ccgj: In the Linux kernel, the following vulnerability has been resolved:
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a
In the Linux kernel, the following vulnerability has been resolved:
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.
This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[ardb: return -ENOMEM instead of breaking out of the loop]
Red Hat
kernel: efi: fix potential NULL deref in efi_mem_reserve_persistent
vendor_redhat·2025-03-27·CVSS 5.5
CVE-2023-52976 [MEDIUM] CWE-476 kernel: efi: fix potential NULL deref in efi_mem_reserve_persistent
kernel: efi: fix potential NULL deref in efi_mem_reserve_persistent
In the Linux kernel, the following vulnerability has been resolved:
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.
This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[ardb: return -ENOMEM instead of breaking out of the loop]
A flaw was found in the EFI module in the Linux kernel. A NULL pointer dereference can be triggered due to a missing check of the return value of the memremap function, causing a crash and resulting in a denial of service.
Statement: This issue has been fixed in Red Hat Enterp
Debian
CVE-2023-52976: linux - In the Linux kernel, the following vulnerability has been resolved: efi: fix po...
vendor_debian·2023·CVSS 5.5
CVE-2023-52976 [MEDIUM] CVE-2023-52976: linux - In the Linux kernel, the following vulnerability has been resolved: efi: fix po...
In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]
Scope: local
bookworm: resolved (fixed in 6.1.11-1)
bullseye: resolved (fixed in 5.10.178-1)
forky: resolved (fixed in 6.1.11-1)
sid: resolved (fixed in 6.1.11-1)
trixie: resolved (fixed in 6.1.11-1)
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afchttps://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23chttps://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e
2025-03-27
Published