CVE-2026-72459
Published: August 18, 2026Last modified: August 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: aa_label_alloc use aa_label_free on alloc failure aa_label_alloc() allocates a secid before allocating or taking the label proxy. If the later proxy step fails, the error path only freed the label memory, leaking any resources initialized by aa_label_init(). Use aa_label_free() on the failure path so partially initialized labels release their secid and other label resources before the backing memory is freed.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
References
- https://git.kernel.org/stable/c/654fe7505dc6889724d4094fa64f89991afabfc3
- https://git.kernel.org/stable/c/6d91479174240f39e9edea250d95fa08c678a207
- https://git.kernel.org/stable/c/7cb69e109610bba500e1ecb870f7988a4717208a
- https://git.kernel.org/stable/c/ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4
- https://git.kernel.org/stable/c/b14fbacad77d64594228983ec20d61a224f3f491
- https://git.kernel.org/stable/c/b5a9da5d36162d34db0f36abb15420e295176793
- https://git.kernel.org/stable/c/bf310b044e85d4de670c94295c5d8e4c5bc5e7bc
- https://git.kernel.org/stable/c/cc2192899d502e3321e60cf1e91421e7309d089c