CVE-2024-57881
mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy()
Severity Score
"-"
*CVSS v-
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved: mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy() In split_large_buddy(), we might call pfn_to_page() on a PFN that might
not exist. In corner cases, such as when freeing the highest pageblock in
the last memory section, this could result with CONFIG_SPARSEMEM &&
!CONFIG_SPARSEMEM_EXTREME in __pfn_to_section() returning NULL and and
__section_mem_map_addr() dereferencing that NULL pointer. Let's fix it, and avoid doing a pfn_to_page() call for the first
iteration, where we already have the page. So far this was found by code inspection, but let's just CC stable as the
fix is easy.
*Credits:
N/A
CVSS Scores
Attack Vector
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User Interaction
Scope
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* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2025-01-11 CVE Reserved
- 2025-01-11 CVE Published
- 2025-01-11 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/fd919a85cd55be5d00a6a7372071f44c8eafb825 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/stable/c/4234ca9884bcae9e48ed38652d91696ad5cd591d | 2024-12-27 | |
| https://git.kernel.org/stable/c/faeec8e23c10bd30e8aa759a2eb3018dae00f924 | 2024-12-19 |
| URL | Date | SRC |
|---|
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" | >= 6.10 < 6.12.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.10 < 6.12.7" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.10 < 6.13-rc4 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.10 < 6.13-rc4" | en |
Affected
| ||||||