CVE-2023-52764: media: gspca: cpia1: shift-out-of-bounds in set_flicker
Vulnerability summary
CVE-2023-52764 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.1% 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 16 · Related 13Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: media: gspca: cpia1: shift-out-of-bounds in set_flicker Syzkaller reported the following issue: UBSAN: shift-out-of-bounds in drivers/media/usb/gspca/cpia1.c:1031:27 shift exponent 245 is too large for 32-bit type 'int' When the value of the variable "sd->params.exposure.gain" exceeds the number of bits in an integer, a shift-out-of-bounds error is reported. It is triggered because the variable "currentexp" cannot be left-shifted by more than the number of bits in an integer. In order to avoid invalid range during left-shift, the conditional expression is added.
CVSS metrics
4 scores · 3 sources · 2 versions- 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
0.26%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.26% 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.
Ubuntu117 products
- linuxAll versions (No fix recorded) | < 5.4.0-173.191 | < 5.15.0-100.110
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1120.130 | < 5.15.0-1056.61
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 69bba62600bd91d6b7c1e8ca181faf8ac64f7060 | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 2eee8edfff90e22980a6b22079d238c3c9d323bb | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 8f83c85ee88225319c52680792320c02158c2a9b | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < c6b6b8692218da73b33b310d7c1df90f115bdd9a | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 09cd8b561aa9796903710a1046957f2b112c8f26 | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < a647f27a7426d2fe1b40da7c8fa2b81354a51177 | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 93bddd6529f187f510eec759f37d0569243c9809 | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < e2d7149b913d14352c82624e723ce1c211ca06d3 | ≥ 54e8bc5d64a651e2fb8b2366637e6a7d920a4c70, < 099be1822d1f095433f4b08af9cc9d6308ec1953 | 2.6.34
- linux_kernel< 4.14.331 | ≥ 4.15, < 4.19.300 | ≥ 4.20, < 5.4.262 | ≥ 5.5, < 5.10.202 | ≥ 5.11, < 5.15.140 | ≥ 5.16, < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3
Debian1 product
- linux< 6.1.64-1 | < 6.6.8-1
3 vendors · 120 products
