CVE-2022-48627: vt: fix memory overlapping when deleting chars in the buffer
First published: Sat Mar 02 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/14d2cc21ca622310babf373e3a8f0b40acfe8265
- https://git.kernel.org/stable/c/39cdb68c64d84e71a4a717000b6e5de208ee60cc
- https://git.kernel.org/stable/c/57964a5710252bc82fe22d9fa98c180c58c20244
- https://git.kernel.org/stable/c/bfee93c9a6c395f9aa62268f1cedf64999844926
- https://git.kernel.org/stable/c/815be99d934e3292906536275f2b8d5131cdf52c
- https://git.kernel.org/stable/c/c8686c014b5e872ba7e334f33ca553f14446fc29
- https://launchpad.net/bugs/cve/CVE-2022-48627
- https://access.redhat.com/security/cve/CVE-2022-48627
- https://lore.kernel.org/linux-cve-announce/2024030252-CVE-2022-48627-c7bf@gregkh/T/#u
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2267510
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/errata/RHSA-2024:4533
- https://access.redhat.com/errata/RHSA-2024:4554
- https://access.redhat.com/errata/RHSA-2024:4583
- https://access.redhat.com/errata/RHSA-2024:5255
- https://bugzilla.redhat.com/show_bug.cgi?id=2267509
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48627
- https://nvd.nist.gov/vuln/detail/CVE-2022-48627
- https://security-tracker.debian.org/tracker/CVE-2022-48627
- https://ubuntu.com/security/CVE-2022-48627
- https://git.kernel.org/linus/39cdb68c64d84e71a4a717000b6e5de208ee60cc
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2022-48627?
CVE-2022-48627 has been classified as a medium severity vulnerability due to potential data corruption risks.
How do I fix CVE-2022-48627?
To fix CVE-2022-48627, upgrade the Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, or 6.12.12-1.
What systems are affected by CVE-2022-48627?
CVE-2022-48627 affects specific versions of the Linux kernel in Debian environments.
What is the nature of the issue in CVE-2022-48627?
CVE-2022-48627 involves a memory overlapping issue that can lead to data corruption when deleting characters in a buffer.
Is there a workaround for CVE-2022-48627?
There are no recommended workarounds for CVE-2022-48627; updating to a secure kernel version is the best course of action.
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