CVE-2022-50010
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
video: fbdev: i740fb: Check the argument of i740_calc_vclk()
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: i740fb: Check the argument of i740_calc_vclk() Since the user can control the arguments of the ioctl() from the user space, under special arguments that may result in a divide-by-zero bug. If the user provides an improper 'pixclock' value that makes the argumet of i740_calc_vclk() less than 'I740_RFREQ_FIX', it will cause a divide-by-zero bug in: drivers/video/fbdev/i740fb.c:353 p_best = min(15, ilog2(I740_MAX_VCO_FREQ / (freq / I740_RFREQ_FIX))); The following log can reveal it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:i740_calc_vclk drivers/video/fbdev/i740fb.c:353 [inline] RIP: 0010:i740fb_decode_var drivers/video/fbdev/i740fb.c:646 [inline] RIP: 0010:i740fb_set_par+0x163f/0x3b70 drivers/video/fbdev/i740fb.c:742 Call Trace: fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1034 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1110 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1189 Fix this by checking the argument of i740_calc_vclk() first.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | 59cefb583c984c0da8cf21a4c57d26d5a20dff5c | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | 656689cb03ada4650016c153346939a1c334b1ae | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | d2d375eb68b4b8de6ea7460483a26fa9de56b443 | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | 2b7f559152a33c55f51b569b22efbe5e24886798 | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | 4b20c61365140d432dee7da7aa294215e7b900d9 | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | e740e787f06671455b59d1e498c9945f7b4e7b3b | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | f350812e2d15278f1d867eeb997407782234fb3c | Unavailable | None listed |
| 5350c65f4f15bbc111ffa629130d3f32cdd4ccf6 | affected | git | 40bf722f8064f50200b8c4f8946cd625b441dda9 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.4 | Unavailable | None listed |
| 4.9.326 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.291 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.256 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.211 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.138 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.63 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.19.4 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |