CVE-2022-48986
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mm/gup: fix gup_pud_range() for dax
In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix gup_pud_range() for dax For dax pud, pud_huge() returns true on x86. So the function works as long as hugetlb is configured. However, dax doesn't depend on hugetlb. Commit 414fd080d125 ("mm/gup: fix gup_pmd_range() for dax") fixed devmap-backed huge PMDs, but missed devmap-backed huge PUDs. Fix this as well. This fixes the below kernel panic: general protection fault, probably for non-canonical address 0x69e7c000cc478: 0000 [#1] SMP < snip > Call Trace: <TASK> get_user_pages_fast+0x1f/0x40 iov_iter_get_pages+0xc6/0x3b0 ? mempool_alloc+0x5d/0x170 bio_iov_iter_get_pages+0x82/0x4e0 ? bvec_alloc+0x91/0xc0 ? bio_alloc_bioset+0x19a/0x2a0 blkdev_direct_IO+0x282/0x480 ? __io_complete_rw_common+0xc0/0xc0 ? filemap_range_has_page+0x82/0xc0 generic_file_direct_write+0x9d/0x1a0 ? inode_update_time+0x24/0x30 __generic_file_write_iter+0xbd/0x1e0 blkdev_write_iter+0xb4/0x150 ? io_import_iovec+0x8d/0x340 io_write+0xf9/0x300 io_issue_sqe+0x3c3/0x1d30 ? sysvec_reschedule_ipi+0x6c/0x80 __io_queue_sqe+0x33/0x240 ? fget+0x76/0xa0 io_submit_sqes+0xe6a/0x18d0 ? __fget_light+0xd1/0x100 __x64_sys_io_uring_enter+0x199/0x880 ? __context_tracking_enter+0x1f/0x70 ? irqentry_exit_to_user_mode+0x24/0x30 ? irqentry_exit+0x1d/0x30 ? __context_tracking_exit+0xe/0x70 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc97c11a7be < snip > </TASK> ---[ end trace 48b2e0e67debcaeb ]--- RIP: 0010:internal_get_user_pages_fast+0x340/0x990 < snip > Kernel panic - not syncing: Fatal exception Kernel Offset: disabled
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 414fd080d125408cb15d04ff4907e1dd8145c8c7 | affected | git | 04edfa3dc06ecfc6133a33bc7271298782dee875 | Unavailable | None listed |
| 414fd080d125408cb15d04ff4907e1dd8145c8c7 | affected | git | f1cf856123ceb766c49967ec79b841030fa1741f | Unavailable | None listed |
| 414fd080d125408cb15d04ff4907e1dd8145c8c7 | affected | git | 3ac29732a2ffa64c7de13a072b0f2848b9c11037 | Unavailable | None listed |
| 414fd080d125408cb15d04ff4907e1dd8145c8c7 | affected | git | e06d13c36ded750c72521b600293befebb4e56c5 | Unavailable | None listed |
| 414fd080d125408cb15d04ff4907e1dd8145c8c7 | affected | git | fcd0ccd836ffad73d98a66f6fea7b16f735ea920 | Unavailable | None listed |
| c133d8eb894cb280f331608c6f1962ba9fbfe6b0 | affected | git | Unavailable | Unavailable | None listed |
| 538162d21ac877b060dc057c89f13718f5caffc5 | affected | git | Unavailable | Unavailable | None listed |
| 8b1a7762e0dac5db42a003009fdcb425f10baa07 | affected | git | Unavailable | Unavailable | None listed |
| 4.9.165 | affected | semver | 4.10 | Unavailable | None listed |
| 4.14.108 | affected | semver | 4.15 | Unavailable | None listed |
| 4.19.31 | affected | semver | 4.20 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.0 | Unavailable | None listed |
| 5.4.227 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.159 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.83 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.0.13 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |