CVE-2021-47291
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
While running the self-tests on a KASAN enabled kernel, I observed a
slab-out-of-bounds splat very similar to the one reported in
commit 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in
fib6_nh_flush_exceptions").
We additionally need to take care of fib6_metrics initialization
failure when the caller provides an nh.
The fix is similar, explicitly free the route instead of calling
fib6_info_release on a half-initialized object.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ipv6: corrige otra slab fuera de los límites en fib6_nh_flush_exceptions. Mientras ejecutaba las autopruebas en un kernel habilitado para KASAN, observé una slab fuera de los límites muy similar al informado en la confirmación 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions"). Además, debemos ocuparnos del error de inicialización de fib6_metrics cuando la persona que llama proporciona un nh. La solución es similar: libera explícitamente la ruta en lugar de llamar a fib6_info_release en un objeto medio inicializado.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-21 CVE Reserved
- 2024-05-21 CVE Published
- 2024-12-19 CVE Updated
- 2024-12-24 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
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" | >= 5.3 < 5.4.136 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.4.136" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.3 < 5.10.54 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.10.54" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.3 < 5.13.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.13.6" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.3 < 5.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.14" | en |
Affected
| ||||||