CVE-2022-50102
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: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() 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 in: drivers/video/fbdev/arkfb.c:784: ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul); with hdiv=1, pixclock=1 and hmul=2 you end up with (1*1)/2 = (int) 0. and then in: drivers/video/fbdev/arkfb.c:504: rv = dac_set_freq(par->dac, 0, 1000000000 / pixclock); we'll get a division-by-zero. The following log can reveal it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:ark_set_pixclock drivers/video/fbdev/arkfb.c:504 [inline] RIP: 0010:arkfb_set_par+0x10fc/0x24c0 drivers/video/fbdev/arkfb.c:784 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 ark_set_pixclock() 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) |
|---|---|---|---|---|---|
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7 | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | b9a66f23612b84617e04412169e155a4b92f632d | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | a249e1b89ca25e1c34bdf96154e3f6224a91a9af | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 0288fa799e273b08839037499d704dc7bdc13e9a | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 236c1502520b7b08955467ec2e50b3232e34f1f9 | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 9ebc5031958c1f3a2795e4533b4091d77c738d14 | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 15661642511b2b192077684a89f42a8d95d54286 | Unavailable | None listed |
| 681e14730c73cc2c71af282c001de6bc71c22f00 | affected | git | 2f1c4523f7a3aaabe7e53d3ebd378292947e95c8 | 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) |
|---|---|---|---|---|---|
| 2.6.22 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.22 | Unavailable | 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 |
| 5.10.137 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.61 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.18.18 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19.2 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |