CVE-2022-49152
XArray: Fix xas_create_range() when multi-order entry present
Summary
Descriptions
In the Linux kernel, the following vulnerability has been resolved: XArray: Fix xas_create_range() when multi-order entry present If there is already an entry present that is of order >= XA_CHUNK_SHIFT
when we call xas_create_range(), xas_create_range() will misinterpret
that entry as a node and dereference xa_node->parent, generally leading
to a crash that looks something like this: general protection fault, probably for non-canonical address 0xdffffc0000000001:
0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 32 Comm: khugepaged Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0
RIP: 0010:xa_parent_locked include/linux/xarray.h:1207 [inline]
RIP: 0010:xas_create_range+0x2d9/0x6e0 lib/xarray.c:725 It's deterministically reproducable once you know what the problem is,
but producing it in a live kernel requires khugepaged to hit a race.
While the problem has been present since xas_create_range() was
introduced, I'm not aware of a way to hit it before the page cache was
converted to use multi-index entries.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-02-26 CVE Reserved
- 2025-02-26 CVE Published
- 2025-02-26 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
Threat Intelligence Resources (0)
Select | Title | Date |
---|
Select an advisory to view details here.
Select | Title | Date |
---|
Select an exploit to view details here.
References (7)
URL | Tag | Source |
---|---|---|
https://git.kernel.org/stable/c/6b24ca4a1a8d4ee3221d6d44ddbb99f542e4bda3 | Vuln. Introduced |
URL | Date | SRC |
---|
URL | Date | SRC |
---|
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.4.189 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.4.189" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.10.110 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.10.110" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.15.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.15.33" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.16.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.16.19" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.17.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.17.2" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 5.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.18" | en |
Affected
|