CVE-2023-53034: ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans
Vulnerability summary
CVE-2023-53034 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 22.1% of scored vulnerabilities.
Not severe (CVSS 7.1, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 63 · Related 49Timeline
- 16-04-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans There is a kernel API ntb_mw_clear_trans() would pass 0 to both addr and size. This would make xlate_pos negative. [ 23.734156] switchtec switchtec0: MW 0: part 0 addr 0x0000000000000000 size 0x0000000000000000 [ 23.734158] ================================================================================ [ 23.734172] UBSAN: shift-out-of-bounds in drivers/ntb/hw/mscc/ntb_hw_switchtec.c:293:7 [ 23.734418] shift exponent -1 is negative Ensuring xlate_pos is a positive or zero before BIT.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.29% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu133 products
- linux< 5.4.0-218.238 | < 5.15.0-142.152 | < 6.8.0-86.87
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1147.157 | < 5.15.0-1086.93 | < 6.8.0-1041.43
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < f56951f211f181410a383d305e8d370993e45294 | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < 5b6857bb3bfb0dae17fab1e42c1e82c204a508b1 | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < 2429bdf26a0f3950fdd996861e9c1a3873af1dbe | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < 7ed22f8d8be26225a78cf5e85b2036421a6bf2d5 | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < c61a3f2df162ba424be0141649a9ef5f28eaccc1 | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < cb153bdc1812a3375639ed6ca5f147eaefb65349 | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < 36d32cfb00d42e865396424bb5d340fc0a28870d | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < 0df2e03e4620548b41891b4e0d1bd9d2e0d8a39a | ≥ 1e2fd202f8593985cdadca32e0c322f98e7fe7cb, < de203da734fae00e75be50220ba5391e7beecdf9 | 4.16
- linux_kernel≥ 4.16, < 5.4.292 | ≥ 5.5, < 5.10.236 | ≥ 5.11, < 5.15.180 | ≥ 5.16, < 6.1.134 | ≥ 6.2, < 6.6.87 | ≥ 6.7, < 6.12.23 | ≥ 6.13, < 6.13.11 | ≥ 6.14, < 6.14.2
Debian1 product
- linux< 6.1.135-1 | < 6.12.25-1
3 vendors · 136 products
