CVE-2023-52764
CVE-2023-52764 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-59481
- Weakness: CWE-787
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-52764?
- 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.
- How severe is CVE-2023-52764?
- CVE-2023-52764 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-52764 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-52764?
- CVE-2023-52764 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-52764?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2023-52764 have an EU (EUVD) identifier?
- Yes. CVE-2023-52764 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59481.
- When was CVE-2023-52764 published?
- CVE-2023-52764 was published on 2024-05-21 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/099be1822d1f095433f4b08af9cc9d6308ec1953
- https://git.kernel.org/stable/c/09cd8b561aa9796903710a1046957f2b112c8f26
- https://git.kernel.org/stable/c/2eee8edfff90e22980a6b22079d238c3c9d323bb
- https://git.kernel.org/stable/c/69bba62600bd91d6b7c1e8ca181faf8ac64f7060
- https://git.kernel.org/stable/c/8f83c85ee88225319c52680792320c02158c2a9b
- https://git.kernel.org/stable/c/93bddd6529f187f510eec759f37d0569243c9809
- https://git.kernel.org/stable/c/a647f27a7426d2fe1b40da7c8fa2b81354a51177
- https://git.kernel.org/stable/c/c6b6b8692218da73b33b310d7c1df90f115bdd9a
- https://git.kernel.org/stable/c/e2d7149b913d14352c82624e723ce1c211ca06d3
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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