KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.2%
exploitation probability
0.2%top 92% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
The airq_iv_create() can return NULL on failure, but the return value was
never checked. If it fails, zdev->aibv will be NULL and fail when
dereferenced in kvm_zpci_set_airq(). Add a NULL check and free the
previously allocated AISB bit and zdev->aisb on failure.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0dbhttps://git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fahttps://git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20https://git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3https://git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7edhttps://git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9