Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a88c769548047b21f76fd71e04b6a3300ff17160 before 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 629c986e19fe9481227c7cdfd9a105bbc104d245; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 2b35432d324898ec41beb27031d2a1a864a4d40e; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 11993652d0b49e27272db0a37aa828d8a3a4b92b; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 568e3812b1778b4c0c229649b59977d88f400ece; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 112a005d1ded04a4b41b6d01833cc0bda90625cc; affected a88c769548047b21f76fd71e04b6a3300ff17160 before c828fab903725279aa9dc6ae3d44bb7e4778f92c; affected a88c769548047b21f76fd71e04b6a3300ff17160 before 12df140f0bdfae5dcfc81800970dd7f6f632e00c; affected 3f5fae4d1a3189d95b02b4b45e1218df147122bc; affected 4.3.6 before 4.4 |
| Linux / Linux | affected 4.4; unaffected 0 before 4.4; unaffected 4.9.332 through 4.9.*; unaffected 4.14.298 through 4.14.*; unaffected 4.19.264 through 4.19.*; unaffected 5.4.223 through 5.4.*; unaffected 5.10.153 through 5.10.*; unaffected 5.15.76 through 5.15.*; unaffected 6.0.6 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
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