scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size
Summary
| CVE | CVE-2026-97535 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-25 11:17:03 UTC |
| Updated | 2026-10-21 13:21:12 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size The VP control IOCB selects its target virtual port by setting one bit in vp_idx_map, a fixed 16-byte (128-bit) array in both vp_ctrl_entry_24xx and vp_ctrl_entry_24xx_ext. qla25xx_ctrlvp_iocb() computes map = (vp_index - 1) / 8 and writes vce->vp_idx_map[map] without checking that map stays within the array. max_npiv_vports is taken from firmware and only sanitized to a MIN_MULTI_ID_FABRIC-aligned boundary, so it can legitimately be 191 or 255, and qla24xx_control_vp() only rejects vp_index >= max_npiv_vports. A vp_index above 128 therefore yields map >= 16 and an out-of-bounds write of up to 16 bytes past vp_idx_map, corrupting the trailing IOCB fields (or the adjacent request-ring slot on the 64-byte layout). Reject a vp_index that cannot be represented in the IOCB bitmap in qla24xx_control_vp(), and add a defensive ARRAY_SIZE() guard in qla25xx_ctrlvp_iocb() before the write. Adapters that report the usual 63 or 127 NPIV vports are unaffected. |
Risk And Classification
EPSS: 0.002000000 probability, percentile 0.089120000 (date 2026-10-05)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 2853192e154b813fe34a6cbee5e34dfef50d29d0 674d783f2e80d0d7c1c86bf36dc0a09033e704de git | Not specified |
| CNA | Linux | Linux | affected 2853192e154b813fe34a6cbee5e34dfef50d29d0 c80a0362a0fe548c15a0324b1f61c04b62bb2174 git | Not specified |
| CNA | Linux | Linux | affected 2853192e154b813fe34a6cbee5e34dfef50d29d0 48a44e19746eaa70320a3c2571dcb345192fca72 git | Not specified |
| CNA | Linux | Linux | affected 2853192e154b813fe34a6cbee5e34dfef50d29d0 13354ad251ab009102597a791bc7c4d2265229e1 git | Not specified |
| CNA | Linux | Linux | affected 2853192e154b813fe34a6cbee5e34dfef50d29d0 878613ecb5a36db26859c4fd83daf9283a334fa2 git | Not specified |
| CNA | Linux | Linux | affected 4.16 | Not specified |
| CNA | Linux | Linux | unaffected 4.16 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.160 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.112 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.53 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.7 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/878613ecb5a36db26859c4fd83daf9283a334fa2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/48a44e19746eaa70320a3c2571dcb345192fca72 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/13354ad251ab009102597a791bc7c4d2265229e1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c80a0362a0fe548c15a0324b1f61c04b62bb2174 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/674d783f2e80d0d7c1c86bf36dc0a09033e704de | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.