CVE-2026-98754
Unknown
Description
In the Linux kernel, the following vulnerability has been resolved: tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup vcc_cleanup() sets port->tty to NULL without holding port->lock, racing with vcc_event() LDC callbacks that read port->tty under port->lock and then use tty->port. This can cause a use-after-free when the callback dereferences tty->port after cleanup has already destroyed and freed it.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedOct 18, 2026
First seenOct 18, 2026
How to fix
Update
- Linux Linuxb0ad9d025c3229a628a82fbaa7578891075a950d, b193617080b7036d143674089bcfb7d2ba3db588, afcbb821c571f39b273127a7c7d26cb2cef27d2f, 57753441ef84bee3bf0e9ee1e3778d119c44aa32, 88f6ecb058801e9ce7b9aabc966530118d7cd53c, 821050631750e982007c0856c119346edba51cae, 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4, 03b49c991abb8d021ca6fe51cd173447236b0552 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < b0ad9d025c3229a628a82fbaa7578891075a950d, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < b193617080b7036d143674089bcfb7d2ba3db588, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < afcbb821c571f39b273127a7c7d26cb2cef27d2f, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < 57753441ef84bee3bf0e9ee1e3778d119c44aa32, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < 88f6ecb058801e9ce7b9aabc966530118d7cd53c, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < 821050631750e982007c0856c119346edba51cae, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4, 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb ≤ v < 03b49c991abb8d021ca6fe51cd173447236b0552, 4.14 | b0ad9d025c3229a628a82fbaa7578891075a950d, b193617080b7036d143674089bcfb7d2ba3db588, afcbb821c571f39b273127a7c7d26cb2cef27d2f, 57753441ef84bee3bf0e9ee1e3778d119c44aa32, 88f6ecb058801e9ce7b9aabc966530118d7cd53c, 821050631750e982007c0856c119346edba51cae, 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4, 03b49c991abb8d021ca6fe51cd173447236b0552 |
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