CVE-2023-52976
efi: fix potential NULL deref in efi_mem_reserve_persistent
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
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]
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-03-27 CVE Reserved
- 2025-03-27 CVE Published
- 2025-04-28 EPSS Updated
- 2025-05-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/18df7577adae6c6c778bf774b3aebcacbc1fb439 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/b5961ecad7121fec138ebee7d9eba4863f9dc6e7 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-52976 | 2024-04-30 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2355514 | 2024-04-30 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.4.232 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.4.232" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.10.168 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.10.168" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.15.93 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.15.93" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.1.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.1.11" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.2" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.1.16 Search vendor "Linux" for product "Linux Kernel" and version "5.1.16" | en |
Affected
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