CVE-2022-0494: Infoleak
First published: Tue Jan 11 2022(Updated: )
A flaw was found in the linux kernel in scsi_ioctl() function. If the parameter cmd is SCSI_IOCTL_SEND_COMMAND, the function scsi_ioctl will call sg_scsi_ioctl to further process. In function sg_scsi_ioctl, it creates a scsi request and calls blk_rq_map_kern to allocate the internal buffer of this request, but the internal buffer doesn't get zeroed properly. Then this request will be sent to the disk driver, but the disk driver doesn't fill anything into it. Finally, the internal buffer's content is copied to the user buffer which is specified by the parameter sic->data of sg_scsi_ioctl. Reference: <a href="https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel@gmail.com/">https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel@gmail.com/</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <5.17 | |
| Linux Linux kernel | =5.17 | |
| Linux Linux kernel | =5.17-rc1 | |
| Linux Linux kernel | =5.17-rc2 | |
| Linux Linux kernel | =5.17-rc3 | |
| Linux Linux kernel | =5.17-rc4 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| redhat/kernel-rt | <0:4.18.0-372.32.1.rt7.189.el8_6 | 0:4.18.0-372.32.1.rt7.189.el8_6 |
| redhat/kernel | <0:4.18.0-372.32.1.el8_6 | 0:4.18.0-372.32.1.el8_6 |
| redhat/kernel-rt | <0:4.18.0-305.62.1.rt7.134.el8_4 | 0:4.18.0-305.62.1.rt7.134.el8_4 |
| redhat/kernel | <0:4.18.0-305.62.1.el8_4 | 0:4.18.0-305.62.1.el8_4 |
| redhat/kernel | <0:5.14.0-70.22.1.el9_0 | 0:5.14.0-70.22.1.el9_0 |
| redhat/kernel-rt | <0:5.14.0-70.22.1.rt21.94.el9_0 | 0:5.14.0-70.22.1.rt21.94.el9_0 |
| redhat/kernel | <5.17 | 5.17 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.6-1 6.12.9-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2039448
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
- https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel@gmail.com/
- https://www.debian.org/security/2022/dsa-5161
- https://www.debian.org/security/2022/dsa-5173
- https://www.cve.org/CVERecord?id=CVE-2022-0494 https://nvd.nist.gov/vuln/detail/CVE-2022-0494 https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel@gmail.com/
- https://access.redhat.com/errata/RHSA-2022:7134
- https://access.redhat.com/errata/RHSA-2022:7110
- https://access.redhat.com/errata/RHSA-2022:6248
- https://access.redhat.com/errata/RHSA-2022:6243
- https://access.redhat.com/errata/RHSA-2022:6003
- https://access.redhat.com/errata/RHSA-2022:6002
- https://access.redhat.com/security/cve/cve-2022-0494
- https://launchpad.net/bugs/cve/CVE-2022-0494
- https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel%40gmail.com/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0494
- https://nvd.nist.gov/vuln/detail/CVE-2022-0494
- https://security-tracker.debian.org/tracker/CVE-2022-0494
- https://ubuntu.com/security/CVE-2022-0494
- https://git.kernel.org/linus/cc8f7fe1f5eab010191aa4570f27641876fa1267
Parent vulnerabilities
(Appears in the following advisories)
- collector/nvd-api
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/severity
- agent/weakness
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-0494
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- source/NVD
- collector/security-tracker-debian
- source/Debian
- agent/references
- agent/last-modified-date
- agent/remedy
- agent/tags
- agent/description
- agent/softwarecombine
- agent/event
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.17
- version/linux linux kernel/5.17-rc1
- version/linux linux kernel/5.17-rc2
- version/linux linux kernel/5.17-rc3
- version/linux linux kernel/5.17-rc4
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- version/debian debian linux/11.0
- package-manager/redhat
- package-manager/debian