CVE-2022-49726
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()
In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport __init-annotated hv_init_clocksource() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, arch/x86/kernel/cpu/mshyperv.c is never compiled as modular. (CONFIG_HYPERVISOR_GUEST is boolean)
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| dd2cb348613b44f9d948b068775e159aad298599 | affected | git | cff3a7ce6e81418b6e8bac941779bbf5d342d626 | Unavailable | None listed |
| dd2cb348613b44f9d948b068775e159aad298599 | affected | git | db965e2757d95f695e606856418cd84003dd036d | Unavailable | None listed |
| dd2cb348613b44f9d948b068775e159aad298599 | affected | git | 0414eab7c78f3518143d383e448d44fc573ac6d2 | Unavailable | None listed |
| dd2cb348613b44f9d948b068775e159aad298599 | affected | git | 937fcbb55a1e48a6422e87e8f49422c92265f102 | Unavailable | None listed |
| dd2cb348613b44f9d948b068775e159aad298599 | affected | git | 245b993d8f6c4e25f19191edfbd8080b645e12b1 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.3 | Unavailable | None listed |
| 5.4.200 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.124 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.49 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.18.6 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19 | unaffected | original_commit_for_fix | Unavailable | * | None listed |