CVE-2022-50285
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock.
This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems.
Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 629c986e19fe9481227c7cdfd9a105bbc104d245 | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 2b35432d324898ec41beb27031d2a1a864a4d40e | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 11993652d0b49e27272db0a37aa828d8a3a4b92b | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 568e3812b1778b4c0c229649b59977d88f400ece | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 112a005d1ded04a4b41b6d01833cc0bda90625cc | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < c828fab903725279aa9dc6ae3d44bb7e4778f92c | affected |
| Linux | Linux | a88c769548047b21f76fd71e04b6a3300ff17160 < 12df140f0bdfae5dcfc81800970dd7f6f632e00c | affected |
| Linux | Linux | 3f5fae4d1a3189d95b02b4b45e1218df147122bc | affected |
| Linux | Linux | 4.3.6 < 4.4 | affected |
| Linux | Linux | 4.4 | affected |
| Linux | Linux | 0 < 4.4 | unaffected |
| Linux | Linux | 4.9.332 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.298 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.264 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.223 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.153 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.76 <= 5.15.* | unaffected |
| Linux | Linux | 6.0.6 <= 6.0.* | unaffected |
| Linux | Linux | 6.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6
- https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245
- https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e
- https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b
- https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece
- https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc
- https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c
- https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c
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