CVE-2022-48986 (GCVE-0-2022-48986)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2025-05-04 12:44
VLAI?
Title
mm/gup: fix gup_pud_range() for dax
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 414fd080d125408cb15d04ff4907e1dd8145c8c7 , < 04edfa3dc06ecfc6133a33bc7271298782dee875 (git)
Affected: 414fd080d125408cb15d04ff4907e1dd8145c8c7 , < f1cf856123ceb766c49967ec79b841030fa1741f (git)
Affected: 414fd080d125408cb15d04ff4907e1dd8145c8c7 , < 3ac29732a2ffa64c7de13a072b0f2848b9c11037 (git)
Affected: 414fd080d125408cb15d04ff4907e1dd8145c8c7 , < e06d13c36ded750c72521b600293befebb4e56c5 (git)
Affected: 414fd080d125408cb15d04ff4907e1dd8145c8c7 , < fcd0ccd836ffad73d98a66f6fea7b16f735ea920 (git)
Affected: c133d8eb894cb280f331608c6f1962ba9fbfe6b0 (git)
Affected: 538162d21ac877b060dc057c89f13718f5caffc5 (git)
Affected: 8b1a7762e0dac5db42a003009fdcb425f10baa07 (git)
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    Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.227 , ≤ 5.4.* (semver)
Unaffected: 5.10.159 , ≤ 5.10.* (semver)
Unaffected: 5.15.83 , ≤ 5.15.* (semver)
Unaffected: 6.0.13 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.