CVE-2022-49122
dm ioctl: prevent potential spectre v1 gadget
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: dm ioctl: prevent potential spectre v1 gadget It appears like cmd could be a Spectre v1 gadget as it's supplied by a
user and used as an array index. Prevent the contents of kernel memory
from being leaked to userspace via speculative execution by using
array_index_nospec.
A vulnerability was found in the Linux kernel's `dm-ioctl` interface in the `lookup_ioctl()` function, which accepts a user-provided `cmd` value that is used to index the `_ioctls` array directly. This issue could lead to an out-of-bounds access if the CPU speculatively executes the array access before `cmd` is confirmed as valid, allowing an attacker to exploit a Spectre v1 gadget attack.
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Issues addressed include out of bounds read, out of bounds write, and use-after-free vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-02-26 CVE Reserved
- 2025-02-26 CVE Published
- 2025-05-04 CVE Updated
- 2025-07-21 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (11)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-49122 | 2025-07-14 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2348154 | 2025-07-14 |
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" | < 4.9.311 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.311" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.14.276 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.276" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.19.238 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.238" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.4.189 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.189" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.10.111 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.111" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.15.34 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.34" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.16.20 Search vendor "Linux" for product "Linux Kernel" and version " < 5.16.20" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.17.3 Search vendor "Linux" for product "Linux Kernel" and version " < 5.17.3" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.18 Search vendor "Linux" for product "Linux Kernel" and version " < 5.18" | en |
Affected
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