CVE-2022-49395
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49395
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49395.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49395
- Related
- Published
- 2025-02-26T07:01:16Z
- Modified
- 2025-04-17T22:54:57.493672Z
- Downstream
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
um: Fix out-of-bounds read in LDT setup
syscallstubdata() expects the data_count parameter to be the number of longs, not bytes.
================================================================== BUG: KASAN: stack-out-of-bounds in syscallstubdata+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1
CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: showstack.cold+0x166/0x2a7 _dumpstack+0x3a/0x43 dumpstacklvl+0x1f/0x27 printreport.cold+0xdb/0xf81 kasanreport+0x119/0x1f0 kasancheckrange+0x3a3/0x440 memcpy+0x52/0x140 syscallstubdata+0x70/0xe0 writeldtentry+0xac/0x190 initnewldt+0x515/0x960 initnewcontext+0x2c4/0x4d0 mminit.constprop.0+0x5ed/0x760 mmalloc+0x118/0x170 0x60033f48 dooneinitcall+0x1d7/0x860 0x60003e7b kernelinit+0x6e/0x3d4 newthreadhandler+0x1e7/0x2c0
The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: initnewldt+0x0/0x960
This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================
- References
-
- https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6
- https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e
- https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568
- https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f
- https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b
- https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5
- https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0
- https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463
- https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910
- https://security-tracker.debian.org/tracker/CVE-2022-49395
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.127-1
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source