Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a88c769548047b21f76fd71e04b6a3300ff17160 to < 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6affecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 629c986e19fe9481227c7cdfd9a105bbc104d245affecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 2b35432d324898ec41beb27031d2a1a864a4d40eaffecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 11993652d0b49e27272db0a37aa828d8a3a4b92baffecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 568e3812b1778b4c0c229649b59977d88f400eceaffecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 112a005d1ded04a4b41b6d01833cc0bda90625ccaffecteda88c769548047b21f76fd71e04b6a3300ff17160 to < c828fab903725279aa9dc6ae3d44bb7e4778f92caffecteda88c769548047b21f76fd71e04b6a3300ff17160 to < 12df140f0bdfae5dcfc81800970dd7f6f632e00caffected3f5fae4d1a3189d95b02b4b45e1218df147122bcaffected4.3.6 to < 4.4affected
Linux Linux
Default version status: affected
4.4affected0 to < 4.4unaffected4.9.332 to ≤ 4.9.*unaffected4.14.298 to ≤ 4.14.*unaffected4.19.264 to ≤ 4.19.*unaffected5.4.223 to ≤ 5.4.*unaffected5.10.153 to ≤ 5.10.*unaffected5.15.76 to ≤ 5.15.*unaffected6.0.6 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
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 ↗