CVE-2024-50142
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
This expands the validation introduced in commit 07bf7908950a ("xfrm:
Validate address prefix lengths in the xfrm selector.")
syzbot created an SA with
usersa.sel.family = AF_UNSPEC
usersa.sel.prefixlen_s = 128
usersa.family = AF_INET
Because of the AF_UNSPEC selector, verify_newsa_info doesn't put
limits on prefixlen_{s,d}. But then copy_from_user_state sets
x->sel.family to usersa.family (AF_INET). Do the same conversion in
verify_newsa_info before validating prefixlen_{s,d}, since that's how
prefixlen is going to be used later on.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: validar el prefijo de la nueva SA usando la familia de SA cuando sel.family no está configurado Esto expande la validación introducida en el commit 07bf7908950a ("xfrm: validar las longitudes de prefijo de dirección en el selector xfrm"). syzbot creó una SA con usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Debido al selector AF_UNSPEC, verificar_newsa_info no pone límites en prefixlen_{s,d}. Pero luego copy_from_user_state establece x->sel.family en usersa.family (AF_INET). Realice la misma conversión en verificar_newsa_info antes de validar prefixlen_{s,d}, ya que así es como se usará prefixlen más adelante.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-07 CVE Published
- 2024-11-09 EPSS Updated
- 2024-11-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | 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" | >= 2.6.12 < 4.19.323 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 4.19.323" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.4.285 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.4.285" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.10.229 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.10.229" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.15.170 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.15.170" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.1.115 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.1.115" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.6.59 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.6.59" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.11.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.11.6" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.12" | en |
Affected
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