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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/099be1822d1f095433f4b08af9cc9d6308ec1953Patch
- https://git.kernel.org/stable/c/09cd8b561aa9796903710a1046957f2b112c8f26Patch
- https://git.kernel.org/stable/c/2eee8edfff90e22980a6b22079d238c3c9d323bbPatch
- https://git.kernel.org/stable/c/69bba62600bd91d6b7c1e8ca181faf8ac64f7060Patch
- https://git.kernel.org/stable/c/8f83c85ee88225319c52680792320c02158c2a9bPatch
- https://git.kernel.org/stable/c/93bddd6529f187f510eec759f37d0569243c9809Patch
- https://git.kernel.org/stable/c/a647f27a7426d2fe1b40da7c8fa2b81354a51177Patch
- https://git.kernel.org/stable/c/c6b6b8692218da73b33b310d7c1df90f115bdd9aPatch
- https://git.kernel.org/stable/c/e2d7149b913d14352c82624e723ce1c211ca06d3Patch
- https://git.kernel.org/stable/c/099be1822d1f095433f4b08af9cc9d6308ec1953Patch
- https://git.kernel.org/stable/c/09cd8b561aa9796903710a1046957f2b112c8f26Patch
- https://git.kernel.org/stable/c/2eee8edfff90e22980a6b22079d238c3c9d323bbPatch
- https://git.kernel.org/stable/c/69bba62600bd91d6b7c1e8ca181faf8ac64f7060Patch
- https://git.kernel.org/stable/c/8f83c85ee88225319c52680792320c02158c2a9bPatch
- https://git.kernel.org/stable/c/93bddd6529f187f510eec759f37d0569243c9809Patch
- https://git.kernel.org/stable/c/a647f27a7426d2fe1b40da7c8fa2b81354a51177Patch
- https://git.kernel.org/stable/c/c6b6b8692218da73b33b310d7c1df90f115bdd9aPatch
- https://git.kernel.org/stable/c/e2d7149b913d14352c82624e723ce1c211ca06d3Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.