CVE-2024-50156
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
If the allocation in msm_disp_state_dump_regs() failed then
`block->state` can be NULL. The msm_disp_state_print_regs() function
_does_ have code to try to handle it with:
if (*reg)
dump_addr = *reg;
...but since "dump_addr" is initialized to NULL the above is actually
a noop. The code then goes on to dereference `dump_addr`.
Make the function print "Registers not stored" when it sees a NULL to
solve this. Since we're touching the code, fix
msm_disp_state_print_regs() not to pointlessly take a double-pointer
and properly mark the pointer as `const`.
Patchwork: https://patchwork.freedesktop.org/patch/619657/
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/msm: Evitar la desreferenciación NULL en msm_disp_state_print_regs() Si la asignación en msm_disp_state_dump_regs() falla, entonces `block->state` puede ser NULL. La función msm_disp_state_print_regs() _sí_ tiene código para intentar manejarlo con: if (*reg) dump_addr = *reg; ...pero como "dump_addr" se inicializa a NULL, lo anterior es en realidad un noop. Luego, el código continúa para desreferenciar `dump_addr`. Haga que la función imprima "Registros no almacenados" cuando vea un NULL para resolver esto. Ya que estamos tocando el código, arregle msm_disp_state_print_regs() para que no tome un puntero doble sin sentido y marque correctamente el puntero como `const`. Parche: https://patchwork.freedesktop.org/patch/619657/
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-07 CVE Published
- 2024-11-19 CVE Updated
- 2024-11-21 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/98659487b845c05b6bed85d881713545db674c7c | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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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" | >= 5.14 < 5.15.170 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 5.15.170" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.1.115 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.1.115" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.6.59 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.6.59" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.11.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.11.6" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.12" | en |
Affected
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