7.8

CVE-2021-47358

staging: greybus: uart: fix tty use after free

In the Linux kernel, the following vulnerability has been resolved:

staging: greybus: uart: fix tty use after free

User space can hold a tty open indefinitely and tty drivers must not
release the underlying structures until the last user is gone.

Switch to using the tty-port reference counter to manage the life time
of the greybus tty state to avoid use after free after a disconnect.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.9 < 4.9.285
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.249
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.209
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.150
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.70
Linux ≫ Linux Kernel Version >= 5.11 < 5.14.9
Linux ≫ Linux Kernel Version5.15 Updaterc1
Linux ≫ Linux Kernel Version5.15 Updaterc2
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.151
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/4dc56951a8d9d61d364d346c61a5f1d70b4f5e14
Patch
https://git.kernel.org/stable/c/64062fcaca8872f063ec9da011e7bf30470be33f
Patch
https://git.kernel.org/stable/c/92b67aaafb7c449db9f0c3dcabc0ff967cb3a42d
Patch
https://git.kernel.org/stable/c/92dc0b1f46e12cfabd28d709bb34f7a39431b44f
Patch
https://git.kernel.org/stable/c/9872ff6fdce8b229f01993b611b5d1719cb70ff1
Patch
https://git.kernel.org/stable/c/a5cfd51f6348e8fd7531461366946039c29c7e69
Patch
https://git.kernel.org/stable/c/b9e697e60ce9890e9258a73eb061288e7d68e5e6
Patch