CVE-2026-100075

RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

State: Published
Severity: 9.8 Critical
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

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

RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect descriptor, the unwind path destroys RDMA contexts but leaves stale n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending() can then subtract the wrong number of send queue credits.

Reset the counters and clear rw_ctxs after freeing the heap allocation before returning an error.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before af00051dbc9f467d4840ec709680660a3f8990faAffected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before 717ab4d0614e9446bf8e2de6229464499e4008d6Affected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before f1f2252da52cdda912da9993f39f58783b01b38fAffected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189dAffected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before be1478849e1abb1e12dc12e14cdbf800cc6fa99aAffected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before af073bd245180393bcb15d33d3990a6bdc32593aAffected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before bd02d644bd19a2795c018635d273d91e45d2bb95Affected b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before b38f98e176050850f41bb6415f3a71400056623eAffected
LinuxLinux	4.7Affected before 4.7Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before af00051dbc9f467d4840ec709680660a3f8990faAffected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before 717ab4d0614e9446bf8e2de6229464499e4008d6Affected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before f1f2252da52cdda912da9993f39f58783b01b38fAffected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189dAffected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before be1478849e1abb1e12dc12e14cdbf800cc6fa99aAffected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before af073bd245180393bcb15d33d3990a6bdc32593aAffected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before bd02d644bd19a2795c018635d273d91e45d2bb95Affected
b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 to before b38f98e176050850f41bb6415f3a71400056623eAffected

LinuxLinux

4.7Affected
before 4.7Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.