scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress
If during iscsi_sw_tcp_session_create() iscsi_tcp_r2tpool_alloc() fails,
userspace could be accessing the host's ipaddress attr. If we then free the
session via iscsi_session_teardown() while userspace is still accessing the
session we will hit a use after free bug.
Set the tcp_sw_host->session after we have completed session creation and
can no longer fail.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0aaabdb900c7415caa2006ef580322f7eac5f6b6https://git.kernel.org/stable/c/496af9d3682ed4c28fb734342a09e6cc0c056ea4https://git.kernel.org/stable/c/61e43ebfd243bcbad11be26bd921723027b77441https://git.kernel.org/stable/c/6abd4698f4c8a78e7bbfc421205c060c199554a0https://git.kernel.org/stable/c/9758ffe1c07b86aefd7ca8e40d9a461293427ca0https://git.kernel.org/stable/c/d4d765f4761f9e3a2d62992f825aeee593bcb6b9https://git.kernel.org/stable/c/f484a794e4ee2a9ce61f52a78e810ac45f3fe3b3