CVE-2026-43376
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ksmbd: fix use-after-free by using call_rcu() for oplock_info
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using call_rcu() for oplock_info ksmbd currently frees oplock_info immediately using kfree(), even though it is accessed under RCU read-side critical sections in places like opinfo_get() and proc_show_files(). Since there is no RCU grace period delay between nullifying the pointer and freeing the memory, a reader can still access oplock_info structure after it has been freed. This can leads to a use-after-free especially in opinfo_get() where atomic_inc_not_zero() is called on already freed memory. Fix this by switching to deferred freeing using call_rcu().
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) |
|---|---|---|---|---|---|
| 296cb5457cc6f4a754c4ae29855f8a253d52bcc6 | affected | git | 302fef75512b2c8329a3f5efab1ae7ba2562387a | Unavailable | None listed |
| d54ab1520d43e95f9b2e22d7a05fc9614192e5a5 | affected | git | 08aa9f3c8cf4d0bee44df540dfe34e8d64069f2c | Unavailable | None listed |
| 18b4fac5ef17f77fed9417d22210ceafd6525fc7 | affected | git | 1d6abf145615dbfe267ce3b0a271f95e3780e18e | Unavailable | None listed |
| 18b4fac5ef17f77fed9417d22210ceafd6525fc7 | affected | git | ce8507ee82c888126d8e7565e27c016308d24cde | Unavailable | None listed |
| 18b4fac5ef17f77fed9417d22210ceafd6525fc7 | affected | git | 1dfd062caa165ec9d7ee0823087930f3ab8a6294 | Unavailable | None listed |
| d73686367ad68534257cd88a36ca3c52cb8b81d8 | affected | git | Unavailable | Unavailable | None listed |
| 6.6.88 | affected | semver | 6.6.130 | Unavailable | None listed |
| 6.12.25 | affected | semver | 6.12.78 | Unavailable | None listed |
| 6.14.4 | affected | semver | 6.15 | 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) |
|---|---|---|---|---|---|
| 6.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.15 | Unavailable | None listed |
| 6.6.130 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.78 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.19 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.9 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |