CVE-2019-15902

Se descubiró un error de backporting en el kernel de Linux estable/a largo plazo en sus versiones 4.4.x hasta 4.4.190, versiones 4.9.x hasta 4.9.190, versiones 4.14.x hasta 4.14.141, versiones 4.19.x hasta 4.19.69 y versiones 5.2.x hasta 5.2 .11. El uso incorrecto del commit "x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()" aguas arriba reintrodujo la vulnerabilidad Spectre que se pretendía eliminar. Esto ocurrió porque el proceso de backport depende de que cherry recolecte commits específicas y porque se intercambiaron dos líneas de código (ordenadas correctamente).

It was discovered that the RSI 91x Wi-Fi driver in the Linux kernel did not did not handle detach operations correctly, leading to a use-after-free vulnerability. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly perform bounds checking, leading to a heap overflow. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.