In the Linux kernel, the following vulnerability has been resolved:

scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE

core_scsi3_emulate_pro_register_and_move() maps the PERSISTENT RESERVE OUT
parameter list with transport_kmap_data_sg() and parses the destination
TransportID with target_parse_pr_out_transport_id(). For an iSCSI
TransportID (FORMAT CODE 01b), iscsi_parse_pr_out_transport_id() returns
the ISID in iport_ptr as a raw pointer into that mapped buffer.

The function then unmaps the buffer with transport_kunmap_data_sg() before
dereferencing iport_ptr in strcmp(), __core_scsi3_locate_pr_reg() and
core_scsi3_alloc_registration(). When the parameter list spans more than
one page (PARAMETER LIST LENGTH > 4096), transport_kmap_data_sg() uses
vmap() and transport_kunmap_data_sg() does vunmap(), so the kernel virtual
address backing iport_ptr is torn down and every subsequent dereference is
a use-after-free read of the unmapped region.

Keep the parameter list mapped until iport_ptr is no longer needed: drop
the early transport_kunmap_data_sg() and unmap once on the success path,
right before returning. The error paths already unmap through the existing
"if (buf) transport_kunmap_data_sg(cmd)" at the out: label, which now runs
on every post-map error exit because buf is no longer cleared early. Only
reads of the mapping happen while spinlocks are held; the map and unmap
calls remain outside any lock. The sibling caller
core_scsi3_decode_spec_i_port() already uses the buffer before unmapping it
and is left unchanged.

https://git.kernel.org/stable/c/05b3e37433cf2eaf8867f1c16528aa347bb212ab

https://git.kernel.org/stable/c/59a2a5a37dc49a641ad6bc64aee34e5a61025ffd

https://git.kernel.org/stable/c/7d56f5c868d92c9d504a34a3ea450bce481c7f63

https://git.kernel.org/stable/c/9f8076cc73dfa6b10155978c160587e986b22169

https://git.kernel.org/stable/c/a040004846f1fbe687f6ec76d9ccc27b4ead42e4

https://git.kernel.org/stable/c/cb7bdae7fba404852ade34b0c1445fbaf3e54fbb

https://git.kernel.org/stable/c/ef2ee18fec92088c7d8877baf7674e89389ccd66

https://git.kernel.org/stable/c/fda6a1f3c3d7047b5ce5654487649c2daa738bfc

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/target/target_core_pr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"7d56f5c868d92c9d504a34a3ea450bce481c7f63","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"59a2a5a37dc49a641ad6bc64aee34e5a61025ffd","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"9f8076cc73dfa6b10155978c160587e986b22169","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"a040004846f1fbe687f6ec76d9ccc27b4ead42e4","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"05b3e37433cf2eaf8867f1c16528aa347bb212ab","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"cb7bdae7fba404852ade34b0c1445fbaf3e54fbb","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"ef2ee18fec92088c7d8877baf7674e89389ccd66","versionType":"git","status":"affected"},{"version":"4949314c7283ea4f9ade182ca599583b89f7edd6","lessThan":"fda6a1f3c3d7047b5ce5654487649c2daa738bfc","versionType":"git","status":"affected"},{"version":"d2227f84ba0e97906153ac83db13213fb2e3938d","versionType":"git","status":"affected"},{"version":"3.2.9","lessThan":"3.3","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/target/target_core_pr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.3","status":"affected"},{"version":"0","lessThan":"3.3","versionType":"semver","status":"unaffected"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc4","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]