CVE-2022-50446
published 2025-10-01CVE-2022-50446: In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fix leakage of memory allocated for PTE Since commit d9820ff ("ARC: mm: switch…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
ARC: mm: fix leakage of memory allocated for PTE
Since commit d9820ff ("ARC: mm: switch pgtable_t back to struct page *")
a memory leakage problem occurs. Memory allocated for page table entries
not released during process termination. This issue can be reproduced by
a small program that allocates a large amount of memory. After several
runs, you'll see that the amount of free memory has reduced and will
continue to reduce after each run. All ARC CPUs are effected by this
issue. The issue was introduced since the kernel stable release v5.15-rc1.
As described in commit d9820ff after switch pgtable_t back to struct
page *, a pointer to "struct page" and appropriate functions are used to
allocate and free a memory page for PTEs, but the pmd_pgtable macro hasn't
changed and returns the direct virtual address from the PMD (PGD) entry.
Than this address used as a parameter in the __pte_free() and as a result
this function couldn't release memory page allocated for PTEs.
Fix this issue by changing the pmd_pgtable macro and returning pointer to
struct page.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.7-1 (bookworm) | linux 6.0.7-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= d9820ff76f95fa26d33e412254a89cd65b23142d < 14009ada5712649589ab4ad0441b811780ea8773 | 14009ada5712649589ab4ad0441b811780ea8773 |
| linux | linux | >= d9820ff76f95fa26d33e412254a89cd65b23142d < d83a69966e8b6ae9dd447f3ac704c0223bceb7f7 | d83a69966e8b6ae9dd447f3ac704c0223bceb7f7 |
| linux | linux | >= d9820ff76f95fa26d33e412254a89cd65b23142d < 4fd9df10cb7a9289fbd22d669f9f98164d95a1ce | 4fd9df10cb7a9289fbd22d669f9f98164d95a1ce |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 5.15 < 5.15.77 | 5.15.77 |
| linux | linux_kernel | >= 5.16 < 6.0.7 | 6.0.7 |
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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GHSA
GHSA-wpvw-hhw9-p3qj: In the Linux kernel, the following vulnerability has been resolved:
ARC: mm: fix leakage of memory allocated for PTE
Since commit d9820ff ("ARC: mm:
ghsa_unreviewed·2025-10-01
CVE-2022-50446 [MEDIUM] CWE-401 GHSA-wpvw-hhw9-p3qj: In the Linux kernel, the following vulnerability has been resolved:
ARC: mm: fix leakage of memory allocated for PTE
Since commit d9820ff ("ARC: mm:
In the Linux kernel, the following vulnerability has been resolved:
ARC: mm: fix leakage of memory allocated for PTE
Since commit d9820ff ("ARC: mm: switch pgtable_t back to struct page *")
a memory leakage problem occurs. Memory allocated for page table entries
not released during process termination. This issue can be reproduced by
a small program that allocates a large amount of memory. After several
runs, you'll see that the amount of free memory has reduced and will
continue to reduce after each run. All ARC CPUs are effected by this
issue. The issue was introduced since the kernel stable release v5.15-rc1.
As described in commit d9820ff after switch pgtable_t back to struct
page *, a pointer to "struct page" and appropriate functions are used to
allocate and free a memory page for
OSV
CVE-2022-50446: In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fix leakage of memory allocated for PTE Since commit d9820ff ("ARC: mm: s
osv·2025-10-01·CVSS 5.5
CVE-2022-50446 [MEDIUM] CVE-2022-50446: In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fix leakage of memory allocated for PTE Since commit d9820ff ("ARC: mm: s
In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fix leakage of memory allocated for PTE Since commit d9820ff ("ARC: mm: switch pgtable_t back to struct page *") a memory leakage problem occurs. Memory allocated for page table entries not released during process termination. This issue can be reproduced by a small program that allocates a large amount of memory. After several runs, you'll see that the amount of free memory has reduced and will continue to reduce after each run. All ARC CPUs are effected by this issue. The issue was introduced since the kernel stable release v5.15-rc1. As described in commit d9820ff after switch pgtable_t back to struct page *, a pointer to "struct page" and appropriate functions are used to allocate and free a memory page for PT
Red Hat
kernel: ARC: mm: fix leakage of memory allocated for PTE
vendor_redhat·2025-10-01·CVSS 5.5
CVE-2022-50446 [MEDIUM] kernel: ARC: mm: fix leakage of memory allocated for PTE
kernel: ARC: mm: fix leakage of memory allocated for PTE
In the Linux kernel, the following vulnerability has been resolved:
ARC: mm: fix leakage of memory allocated for PTE
Since commit d9820ff ("ARC: mm: switch pgtable_t back to struct page *")
a memory leakage problem occurs. Memory allocated for page table entries
not released during process termination. This issue can be reproduced by
a small program that allocates a large amount of memory. After several
runs, you'll see that the amount of free memory has reduced and will
continue to reduce after each run. All ARC CPUs are effected by this
issue. The issue was introduced since the kernel stable release v5.15-rc1.
As described in commit d9820ff after switch pgtable_t back to struct
page *, a pointer to "struct page" and appropriate fu
Debian
CVE-2022-50446: linux - In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fi...
vendor_debian·2022·CVSS 5.5
CVE-2022-50446 [MEDIUM] CVE-2022-50446: linux - In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fi...
In the Linux kernel, the following vulnerability has been resolved: ARC: mm: fix leakage of memory allocated for PTE Since commit d9820ff ("ARC: mm: switch pgtable_t back to struct page *") a memory leakage problem occurs. Memory allocated for page table entries not released during process termination. This issue can be reproduced by a small program that allocates a large amount of memory. After several runs, you'll see that the amount of free memory has reduced and will continue to reduce after each run. All ARC CPUs are effected by this issue. The issue was introduced since the kernel stable release v5.15-rc1. As described in commit d9820ff after switch pgtable_t back to struct page *, a pointer to "struct page" and appropriate functions are used to allocate and free a memory page for PT
No detection rules found.
No public exploits indexed.
2025-10-01
Published