CVE-2022-50401

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure On error situation `clp->cl_cb_conn.cb_xprt` should not be given a reference to the xprt otherwise both client cleanup and the error handling path of the caller call to put it. Better to delay handing over the reference to a later branch. [ 72.530665] refcount_t: underflow; use-after-free. [ 72.531933] WARNING: CPU: 0 PID: 173 at lib/refcount.c:28 refcount_warn_saturate+0xcf/0x120 [ 72.533075] Modules linked in: nfsd(OE) nfsv4(OE) nfsv3(OE) nfs(OE) lockd(OE)...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 69151594c72a1748cf93ae5b5fa68d5084253dce < 707bcca9616002d204091ca7c4d1d91151104332, >= 0c4fb76c4e711d9e4e70ddc6732310a17076175d < 15fc60aa5bdcf6d5f93000d3d00579fc67632ee0, >= 22c721560ef24003bcb9c3d9c358841dcfa4e212 < 9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23, >= e8cac2e3067e8587f8271c2177cc5ca924a61b54 < fddac3b4578d302ac9e51e7f03a9aae6254ae2a3, >= a4abc6b12eb1f7a533c2e7484cfa555454ff0977 < c1207219a4bfa50121c9345d5d165470d0a82531, >= a4abc6b12eb1f7a533c2e7484cfa555454ff0977 < a472f069ced8601979f53c13c0cf20236074ed46, >= a4abc6b12eb1f7a533c2e7484cfa555454ff0977 < e2f9f03e4537f3fcc8fd2bdd3248530c3477a371, >= a4abc6b12eb1f7a533c2e7484cfa555454ff0977 < d843ebd860c58a38e45527e8ec6516059f4c97f3, >= a4abc6b12eb1f7a533c2e7484cfa555454ff0977 < 3bc8edc98bd43540dbe648e4ef91f443d6d20a24, >= f5a50e848e4509448b8b91536b5d421722bf154b, >= c745f9ef3c8cbae70556131eaeaf0f64510243b7, >= 4.9.229 < 4.9.337, >= 4.14.186 < 4.14.303, >= 4.19.130 < 4.19.270, >= 5.4.49 < 5.4.229, >= 4.4.229 < 4.5, >= 5.7.6 < 5.8, >= 5.8, >= 5.7.6 < 5.10.163, >= 5.11 < 5.15.86

Fixed versions

4.5, 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-415