CVE-2022-50315

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-15. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS

UBSAN complains about array-index-out-of-bounds: [ 1.980703] kernel: UBSAN: array-index-out-of-bounds in /build/linux-9H675w/linux-5.15.0/drivers/ata/libahci.c:968:41 [ 1.980709] kernel: index 15 is out of range for type 'ahci_em_priv [8]' [ 1.980713] kernel: CPU: 0 PID: 209 Comm: scsi_eh_8 Not tainted 5.15.0-25-generic #25-Ubuntu [ 1.980716] kernel: Hardware name: System manufacturer System Product Name/P5Q3, BIOS 1102 06/11/2010 [ 1.980718] kernel: Call Trace: [ 1.980721] kernel: [ 1.980723] kernel: show_stack+0x52/0x58 [ 1.980729] kernel: dump_stack_lvl+0x4a/0x5f [ 1.980734] kernel: dump_stack+0x10/0x12 [ 1.980736] kernel: ubsan_epilogue+0x9/0x45 [ 1.980739] kernel: __ubsan_handle_out_of_bounds.cold+0x44/0x49 [ 1.980742] kernel: ahci_qc_issue+0x166/0x170 [libahci] [ 1.980748] kernel: ata_qc_issue+0x135/0x240 [ 1.980752] kernel: ata_exec_internal_sg+0x2c4/0x580 [ 1.980754] kernel: ? vprintk_default+0x1d/0x20 [ 1.980759] kernel: ata_exec_internal+0x67/0xa0 [ 1.980762] kernel: sata_pmp_read+0x8d/0xc0 [ 1.980765] kernel: sata_pmp_read_gscr+0x3c/0x90 [ 1.980768] kernel: sata_pmp_attach+0x8b/0x310 [ 1.980771] kernel: ata_eh_revalidate_and_attach+0x28c/0x4b0 [ 1.980775] kernel: ata_eh_recover+0x6b6/0xb30 [ 1.980778] kernel: ? ahci_do_hardreset+0x180/0x180 [libahci] [ 1.980783] kernel: ? ahci_stop_engine+0xb0/0xb0 [libahci] [ 1.980787] kernel: ? ahci_do_softreset+0x290/0x290 [libahci] [ 1.980792] kernel: ? trace_event_raw_event_ata_eh_link_autopsy_qc+0xe0/0xe0 [ 1.980795] kernel: sata_pmp_eh_recover.isra.0+0x214/0x560 [ 1.980799] kernel: sata_pmp_error_handler+0x23/0x40 [ 1.980802] kernel: ahci_error_handler+0x43/0x80 [libahci] [ 1.980806] kernel: ata_scsi_port_error_handler+0x2b1/0x600 [ 1.980810] kernel: ata_scsi_error+0x9c/0xd0 [ 1.980813] kernel: scsi_error_handler+0xa1/0x180 [ 1.980817] kernel: ? scsi_unjam_host+0x1c0/0x1c0 [ 1.980820] kernel: kthread+0x12a/0x150 [ 1.980823] kernel: ? set_kthread_struct+0x50/0x50 [ 1.980826] kernel: ret_from_fork+0x22/0x30 [ 1.980831] kernel:

This happens because sata_pmp_init_links() initialize link->pmp up to SATA_PMP_MAX_PORTS while em_priv is declared as 8 elements array.

I can't find the maximum Enclosure Management ports specified in AHCI spec v1.3.1, but "12.2.1 LED message type" states that "Port Multiplier Information" can utilize 4 bits, which implies it can support up to 16 ports. Hence, use SATA_PMP_MAX_PORTS as EM_MAX_SLOTS to resolve the issue.

BugLink: https://bugs.launchpad.net/bugs/1970074

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

September 15, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f70bd4339cb68bc7e206af4c922bc0d249244403
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da2ea4a961d9f89ed248734e7032350c260dc3a3
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d6314d5f68764550c84d732ce901ddd3ac6b415f
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8fbe13de1cc7cef2564be3cbf60400b33eee023b
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/67a00c299c5c143817c948fbc7de1a2fa1af38fb
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/383b7c50f5445ff8dbbf03080905648d6980c39d
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/303d0f761431d848dd8d7ff9fd9b8c101879cabe
generic

ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1e41e693f458eef2d5728207dbd327cd3b16580a

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.9.332—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (22 versions)5.10.158-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.6-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 147 total refreshes for this CVE.

  1. 2026-09-16 14:05 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-50315?
CVE-2022-50315 is a high vulnerability published on September 15, 2025. In the Linux kernel, the following vulnerability has been resolved: ata: ahci: Match EMMAXSLOTS with SATAPMPMAX_PORTS UBSAN complains about array-index-out-of-bounds: [ 1.980703] kernel: UBSAN: array-index-out-of-bounds in /build/linux-9H675w/linux-5.15.0/drivers/ata/libahci.c:968:41 [ 1.980709]…
When was CVE-2022-50315 disclosed?
CVE-2022-50315 was first published in the National Vulnerability Database on September 15, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50315 actively exploited?
CVE-2022-50315 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.9% of all scored CVEs.
What is the CVSS score of CVE-2022-50315?
CVE-2022-50315 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-50315?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50315, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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