ubifs: skip dumping tnc tree when zroot is null
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.2%
exploitation probability
0.2%top 88% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ubifs: skip dumping tnc tree when zroot is null
Clearing slab cache will free all znode in memory and make
c->zroot.znode = NULL, then dumping tnc tree will access
c->zroot.znode which cause null pointer dereference.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://git.kernel.org/stable/c/1787cd67bb94b106555ffe64f887f6aa24b47010https://git.kernel.org/stable/c/2a987950df825d0144370e700dc5fb337684ffbahttps://git.kernel.org/stable/c/40e25a3c0063935763717877bb2a814c081509ffhttps://git.kernel.org/stable/c/428aff8f7cfb0d9a8854477648022cef96bcab28https://git.kernel.org/stable/c/6211c11fc20424bbc6d79c835c7c212b553ae898https://git.kernel.org/stable/c/77e5266e3d3faa6bdcf20d9c68a8972f6aa06522https://git.kernel.org/stable/c/bdb0ca39e0acccf6771db49c3f94ed787d05f2d7https://git.kernel.org/stable/c/e01b55f261ccc96e347eba4931e4429d080d879dhttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.html