Description
In the Linux kernel, the following vulnerability has been resolved: s390/ctcm: Prevent XID null dereference The mpc_validate_xid() function sets grp->saved_xid2->xid2_flag2 to 0x40 to signal XID validation error. If peer XID is NULL or r/w channel pairing mismatch happens, grp->saved_xid2 is never initialized. An attempt to set the flag in such case leads to NULL dereference. Fix this by using the always available priv->xid->xid2_flag2 instead of grp->saved_xid2->xid2_flag2 for validation errors.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < f9d9e2dadc9fbdfe01aeb6581978c3b59092919eaffected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < a7c3e1795e4fe5e6680cab7cd7eee0503b00a248affected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < c11e435d334e4c311eaaf721e179a5ca6852c221affected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < 977dac6cc5531a8e058df05b6af94406b940cb9eaffected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < 1525fb6e2f9f9a2c8c8723ee0959b1130a6b8213affected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < 34fa3607b7604b3052b19cec8b0ad644818cdd2aaffected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < 8a2f7a4ad1d81612fa65bfa4d392ba1bb2f5eeabaffected293d984f0e3604c04dcdbf00117ddc1e5d4b1909 to < b264d8422779d69febce914efc47a92a85cc382caffected
Linux Linux
Default version status: affected
2.6.26affected0 to < 2.6.26unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.161 to ≤ 6.6.*unaffected6.12.115 to ≤ 6.12.*unaffected6.18.59 to ≤ 6.18.*unaffected7.2.13 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/f9d9e2dadc9fbdfe01aeb6581978c3b59092919e ↗
- https://git.kernel.org/stable/c/a7c3e1795e4fe5e6680cab7cd7eee0503b00a248 ↗
- https://git.kernel.org/stable/c/c11e435d334e4c311eaaf721e179a5ca6852c221 ↗
- https://git.kernel.org/stable/c/977dac6cc5531a8e058df05b6af94406b940cb9e ↗
- https://git.kernel.org/stable/c/1525fb6e2f9f9a2c8c8723ee0959b1130a6b8213 ↗
- https://git.kernel.org/stable/c/34fa3607b7604b3052b19cec8b0ad644818cdd2a ↗
- https://git.kernel.org/stable/c/8a2f7a4ad1d81612fa65bfa4d392ba1bb2f5eeab ↗
- https://git.kernel.org/stable/c/b264d8422779d69febce914efc47a92a85cc382c ↗