CVE-2022-48732: drm/nouveau: fix off by one in BIOS boundary checking
Vulnerability summary
CVE-2022-48732 is a high (CVSS 7.8) Off-by-one Error vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.5% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 12Timeline
- 20-06-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix off by one in BIOS boundary checking Bounds checking when parsing init scripts embedded in the BIOS reject access to the last byte. This causes driver initialization to fail on Apple eMac's with GeForce 2 MX GPUs, leaving the system with no working console. This is probably only seen on OpenFirmware machines like PowerPC Macs because the BIOS image provided by OF is only the used parts of the ROM, not a power-of-two blocks read from PCI directly so PCs always have empty bytes at the end that are never accessed.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu89 products
- linux< 4.15.0-176.185 | < 5.4.0-109.123
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.15.0-1127.136 | < 5.4.0-1072.77
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < d4b746e60fd8eaa8016e144223abe91158edcdad | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < 909d3ec1bf9f0ec534bfc081b77c0836fea7b0e2 | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < b2a21669ee98aafc41c6d42ef15af4dab9e6e882 | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < acc887ba88333f5fec49631f12d8cc7ebd95781c | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < f071d9fa857582d7bd77f4906691f73d3edeab73 | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < d877e814a62b7de9069aeff8bc1d979dfc996e06 | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < e7c36fa8a1e63b08312162179c78a0c7795ea369 | ≥ 4d4e9907ff572bb1d1c0f6913ad6e3d6d4525077, < 1b777d4d9e383d2744fc9b3a09af6ec1893c8b1a | 4.8
- linux_kernel≥ 4.8, < 4.9.300 | ≥ 4.10, < 4.14.265 | ≥ 4.15, < 4.19.228 | ≥ 4.20, < 5.4.178 | ≥ 5.5, < 5.10.99 | ≥ 5.11, < 5.15.22 | ≥ 5.16, < 5.16.8
Debian1 product
- linux< 5.16.10-1
3 vendors · 92 products
