Description
In the Linux kernel, the following vulnerability has been resolved: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a 256-byte stack buffer, then will memcpy() cur_len bytes from that buffer. snprintf() returns the length the output would have had, which can exceed the buffer size when the fabric WWN is long because iSCSI IQN names can be up to 223 bytes. The check at the memcpy() site only guards the destination page write, not the source read, so memcpy() will read past the stack buffer and copy adjacent stack contents to the sysfs reader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic() will be triggered. Commit 27e06650a5ea ("scsi: target: target_core_configfs: Add length check to avoid buffer overflow") added the same bound to the target_lu_gp_members_show() but the tg_pt_gp variant was missed so resolve that here.
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
c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < d3cc9d490c207d57a289054397349f6f8c90354eaffectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < db0a4759d62cad4ff891e2d81ae4be73bb57f4a4affectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < 12f2201a56957ba020392223a7393a5eba080c1baffectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < 1f678d13e939f91840cb1ebe9b88544923539d3caffectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < 72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89eaffectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < 00d91bfdce5033f5d9b4915638ae9b0553848b5daffectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < e501154f9d82c95d2719bcbbaf679d8fd3226ef7affectedc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 to < 772a896a56e0e3ef9424a025cec9176f9d8f4552affected
Linux Linux
Default version status: affected
2.6.38affected0 to < 2.6.38unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.88 to ≤ 6.12.*unaffected6.18.30 to ≤ 6.18.*unaffected7.0.7 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d3cc9d490c207d57a289054397349f6f8c90354e ↗
- https://git.kernel.org/stable/c/db0a4759d62cad4ff891e2d81ae4be73bb57f4a4 ↗
- https://git.kernel.org/stable/c/12f2201a56957ba020392223a7393a5eba080c1b ↗
- https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c ↗
- https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e ↗
- https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d ↗
- https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7 ↗
- https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗