Copy_from_user Spectre-V1 Gadget in Linux Kernel
Published May 25, 2023
6.7
MEDIUMCVSS 3.1
EPSS 0.64%
Description
Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47
Affected products
-
- Version StatusaffectedConstraints
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux Kernel | unaffected |
|
- < 4.14.307
- ≥ 4.19.0 · < 4.19.274
- ≥ 5.4.0 · < 5.4.233
- ≥ 5.10.0 · < 5.10.170
- ≥ 5.15.0 · < 5.15.96
- ≥ 6.1.0 · < 6.1.14
- ≥ 6.2.0 · < 6.2.1
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-372.9.1.el8
Fixed · RHSA-2022:1988
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-372.9.1.rt7.166.el8
Fixed · RHSA-2022:1975
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-372.9.1.el8 | Fixed | RHSA-2022:1988 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-372.9.1.rt7.166.el8 | Fixed | RHSA-2022:1975 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
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.
References (7)
- https://access.redhat.com/security/cve/CVE-2023-0459 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2216383 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-12513 Advisory
- https://github.com/torvalds/linux/commit/4b842e4e25b12951fa10dedb4bc16bc47e3b850c Patch
- https://github.com/torvalds/linux/commit/74e19ef0ff8061ef55957c3abd71614ef0f42f47 Patch
- https://nvd.nist.gov/vuln/detail/CVE-2023-0459
- https://www.cve.org/CVERecord?id=CVE-2023-0459
Change history (0)
No recorded changes yet.