CVE-2022-49210
MIPS: pgalloc: fix memory leak caused by pgd_free()
Summary
Descriptions
In the Linux kernel, the following vulnerability has been resolved: MIPS: pgalloc: fix memory leak caused by pgd_free() pgd page is freed by generic implementation pgd_free() since commit
f9cb654cb550 ("asm-generic: pgalloc: provide generic pgd_free()"),
however, there are scenarios that the system uses more than one page as
the pgd table, in such cases the generic implementation pgd_free() won't
be applicable anymore. For example, when PAGE_SIZE_4KB is enabled and
MIPS_VA_BITS_48 is not enabled in a 64bit system, the macro "PGD_ORDER"
will be set as "1", which will cause allocating two pages as the pgd
table. Well, at the same time, the generic implementation pgd_free()
just free one pgd page, which will result in the memory leak. The memory leak can be easily detected by executing shell command:
"while true; do ls > /dev/null; grep MemFree /proc/meminfo; done"
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-02-26 CVE Reserved
- 2025-02-26 CVE Published
- 2025-02-26 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
Threat Intelligence Resources (0)
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References (6)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/f9cb654cb550b7b87e8608b14fc3eca432429ffe | Vuln. Introduced |
| URL | Date | SRC |
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| URL | Date | SRC |
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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" | >= 5.9 < 5.10.110 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.10.110" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.15.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.15.33" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.16.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.16.19" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.17.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.17.2" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.18" | en |
Affected
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